57521951 has 2 divisors, whose sum is σ = 57521952. Its totient is φ = 57521950.

The previous prime is 57521941. The next prime is 57521977. The reversal of 57521951 is 15912575.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57521951 - 2⁶ = 57521887 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57521941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28760975 + 28760976.

It is an arithmetic number, because the mean of its divisors is an integer number (28760976).

Almost surely, 2^57521951 is an apocalyptic number.

57521951 is a deficient number, since it is larger than the sum of its proper divisors (1).

57521951 is an equidigital number, since it uses as much as digits as its factorization.

57521951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15750, while the sum is 35.

The square root of 57521951 is about 7584.3227120159. The cubic root of 57521951 is about 386.0212410121.

The spelling of 57521951 in words is "fifty-seven million, five hundred twenty-one thousand, nine hundred fifty-one".