57621607 has 2 divisors, whose sum is σ = 57621608. Its totient is φ = 57621606.

The previous prime is 57621511. The next prime is 57621631. The reversal of 57621607 is 70612675.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57621607 - 2⁷ = 57621479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57621307) 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 as a sum of consecutive naturals, namely, 28810803 + 28810804.

It is an arithmetic number, because the mean of its divisors is an integer number (28810804).

Almost surely, 2^57621607 is an apocalyptic number.

57621607 is a deficient number, since it is larger than the sum of its proper divisors (1).

57621607 is an equidigital number, since it uses as much as digits as its factorization.

57621607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 57621607 is about 7590.8897370466. The cubic root of 57621607 is about 386.2440379190.

The spelling of 57621607 in words is "fifty-seven million, six hundred twenty-one thousand, six hundred seven".