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53003031 = 397182141
BaseRepresentation
bin1100101000110…
…0001100010111
310200201211111020
43022030030113
5102032044111
65132012223
71212342534
oct312141427
9120654436
1053003031
1127a11a64
1215901073
13ac9a253
147079d8b
1549be906
hex328c317

53003031 has 8 divisors (see below), whose sum is σ = 71399664. Its totient is φ = 34970880.

The previous prime is 53003029. The next prime is 53003033. The reversal of 53003031 is 13030035.

It is an interprime number because it is at equal distance from previous prime (53003029) and next prime (53003033).

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

It is not a de Polignac number, because 53003031 - 21 = 53003029 is a prime.

It is a super-2 number, since 2×530030312 = 5618642590373922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53003031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53003033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90780 + ... + 91361.

It is an arithmetic number, because the mean of its divisors is an integer number (8924958).

Almost surely, 253003031 is an apocalyptic number.

53003031 is a deficient number, since it is larger than the sum of its proper divisors (18396633).

53003031 is a wasteful number, since it uses less digits than its factorization.

53003031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182241.

The product of its (nonzero) digits is 135, while the sum is 15.

The square root of 53003031 is about 7280.3180562390. The cubic root of 53003031 is about 375.6357358530.

Adding to 53003031 its reverse (13030035), we get a palindrome (66033066).

The spelling of 53003031 in words is "fifty-three million, three thousand, thirty-one".

Divisors: 1 3 97 291 182141 546423 17667677 53003031