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15172053 = 313389027
BaseRepresentation
bin111001111000…
…000111010101
31001112211010220
4321320013111
512341001203
61301104553
7242650251
oct71700725
931484126
1015172053
118622a96
1250b8159
1331b2a60
14202d261
1514ea653
hexe781d5

15172053 has 8 divisors (see below), whose sum is σ = 21785568. Its totient is φ = 9336624.

The previous prime is 15172043. The next prime is 15172063. The reversal of 15172053 is 35027151.

It is an interprime number because it is at equal distance from previous prime (15172043) and next prime (15172063).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15172053 - 213 = 15163861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15172043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194475 + ... + 194552.

It is an arithmetic number, because the mean of its divisors is an integer number (2723196).

Almost surely, 215172053 is an apocalyptic number.

15172053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15172053 is a deficient number, since it is larger than the sum of its proper divisors (6613515).

15172053 is a wasteful number, since it uses less digits than its factorization.

15172053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389043.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 15172053 is about 3895.1319618211. The cubic root of 15172053 is about 247.5605565525.

It can be divided in two parts, 1517 and 2053, that added together give a triangular number (3570 = T84).

The spelling of 15172053 in words is "fifteen million, one hundred seventy-two thousand, fifty-three".

Divisors: 1 3 13 39 389027 1167081 5057351 15172053