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53156457 = 3237159629
BaseRepresentation
bin1100101011000…
…1101001101001
310201000121221200
43022301221221
5102102001312
65135154413
71213552044
oct312615151
9121017850
1053156457
1128007262
1215975a09
13b022033
1470b9c5b
154a000dc
hex32b1a69

53156457 has 12 divisors (see below), whose sum is σ = 78857220. Its totient is φ = 34479648.

The previous prime is 53156447. The next prime is 53156479. The reversal of 53156457 is 75465135.

53156457 is a `hidden beast` number, since 5 + 3 + 1 + 5 + 645 + 7 = 666.

53156457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 49829481 + 3326976 = 7059^2 + 1824^2 .

It is not a de Polignac number, because 53156457 - 210 = 53155433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53156417) 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 11 ways as a sum of consecutive naturals, for example, 79482 + ... + 80147.

It is an arithmetic number, because the mean of its divisors is an integer number (6571435).

Almost surely, 253156457 is an apocalyptic number.

It is an amenable number.

53156457 is a deficient number, since it is larger than the sum of its proper divisors (25700763).

53156457 is a wasteful number, since it uses less digits than its factorization.

53156457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159672 (or 159669 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 53156457 is about 7290.8474816032. The cubic root of 53156457 is about 375.9978331888.

The spelling of 53156457 in words is "fifty-three million, one hundred fifty-six thousand, four hundred fifty-seven".

Divisors: 1 3 9 37 111 333 159629 478887 1436661 5906273 17718819 53156457