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53172025 = 522638087
BaseRepresentation
bin1100101011010…
…1011100111001
310201001102022021
43022311130321
5102103001100
65135354441
71213645324
oct312653471
9121042267
1053172025
1128017a25
1215982a21
13b02914a
1470c17bb
154a04a1a
hex32b5739

53172025 has 12 divisors (see below), whose sum is σ = 66192192. Its totient is φ = 42370640.

The previous prime is 53172017. The next prime is 53172043. The reversal of 53172025 is 52027135.

It is not a de Polignac number, because 53172025 - 23 = 53172017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2532 + ... + 10618.

It is an arithmetic number, because the mean of its divisors is an integer number (5516016).

Almost surely, 253172025 is an apocalyptic number.

It is an amenable number.

53172025 is a deficient number, since it is larger than the sum of its proper divisors (13020167).

53172025 is a wasteful number, since it uses less digits than its factorization.

53172025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8360 (or 8355 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 53172025 is about 7291.9150433888. The cubic root of 53172025 is about 376.0345359292.

The spelling of 53172025 in words is "fifty-three million, one hundred seventy-two thousand, twenty-five".

Divisors: 1 5 25 263 1315 6575 8087 40435 202175 2126881 10634405 53172025