57503997 has 6 divisors (see below), whose sum is σ = 83061342. Its totient is φ = 38335992.

The previous prime is 57503987. The next prime is 57504019. The reversal of 57503997 is 79930575.

It is a happy number.

57503997 is a `hidden beast` number, since 57 + 503 + 9 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 50893956 + 6610041 = 7134^2 + 2571^2 .

It is not a de Polignac number, because 57503997 - 2⁷ = 57503869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57503917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3194658 + ... + 3194675.

It is an arithmetic number, because the mean of its divisors is an integer number (13843557).

Almost surely, 2^57503997 is an apocalyptic number.

It is an amenable number.

57503997 is a deficient number, since it is larger than the sum of its proper divisors (25557345).

57503997 is a wasteful number, since it uses less digits than its factorization.

57503997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6389339 (or 6389336 counting only the distinct ones).

The product of its (nonzero) digits is 297675, while the sum is 45.

The square root of 57503997 is about 7583.1389938468. The cubic root of 57503997 is about 385.9810746267.

The spelling of 57503997 in words is "fifty-seven million, five hundred three thousand, nine hundred ninety-seven".