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57461972 = 22173127259
BaseRepresentation
bin1101101100110…
…0110011010100
311000010101000012
43123030303110
5104202240342
65411335352
71265263421
oct333146324
9130111005
1057461972
112a488037
12172b1558
13bb9b989
1478bad48
1550a0b82
hex36cccd4

57461972 has 24 divisors (see below), whose sum is σ = 109912320. Its totient is φ = 26167680.

The previous prime is 57461959. The next prime is 57461977. The reversal of 57461972 is 27916475.

It is a super-2 number, since 2×574619722 = 6603756452257568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57461977) 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, 11522 + ... + 15737.

It is an arithmetic number, because the mean of its divisors is an integer number (4579680).

Almost surely, 257461972 is an apocalyptic number.

It is an amenable number.

57461972 is a deficient number, since it is larger than the sum of its proper divisors (52450348).

57461972 is a wasteful number, since it uses less digits than its factorization.

57461972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27311 (or 27309 counting only the distinct ones).

The product of its digits is 105840, while the sum is 41.

The square root of 57461972 is about 7580.3675372636. The cubic root of 57461972 is about 385.8870243078.

The spelling of 57461972 in words is "fifty-seven million, four hundred sixty-one thousand, nine hundred seventy-two".

Divisors: 1 2 4 17 31 34 62 68 124 527 1054 2108 27259 54518 109036 463403 845029 926806 1690058 1853612 3380116 14365493 28730986 57461972