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52257731 is a prime number
BaseRepresentation
bin1100011101011…
…0001111000011
310122022222010112
43013112033003
5101334221411
65104021535
71203116621
oct307261703
9118288115
1052257731
1127553009
12156018ab
13aa98c46
146d24511
1548c3b8b
hex31d63c3

52257731 has 2 divisors, whose sum is σ = 52257732. Its totient is φ = 52257730.

The previous prime is 52257721. The next prime is 52257757. The reversal of 52257731 is 13775225.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-52257731 is a prime.

It is a super-2 number, since 2×522577312 = 5461740898536722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (52257721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26128865 + 26128866.

It is an arithmetic number, because the mean of its divisors is an integer number (26128866).

Almost surely, 252257731 is an apocalyptic number.

52257731 is a deficient number, since it is larger than the sum of its proper divisors (1).

52257731 is an equidigital number, since it uses as much as digits as its factorization.

52257731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14700, while the sum is 32.

The square root of 52257731 is about 7228.9508920728. The cubic root of 52257731 is about 373.8667559896.

The spelling of 52257731 in words is "fifty-two million, two hundred fifty-seven thousand, seven hundred thirty-one".