57540551 has 4 divisors (see below), whose sum is σ = 57588600. Its totient is φ = 57492504.

The previous prime is 57540541. The next prime is 57540559. The reversal of 57540551 is 15504575.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57540551 - 2⁶ = 57540487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57540559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22181 + ... + 24638.

It is an arithmetic number, because the mean of its divisors is an integer number (14397150).

Almost surely, 2^57540551 is an apocalyptic number.

57540551 is a deficient number, since it is larger than the sum of its proper divisors (48049).

57540551 is a wasteful number, since it uses less digits than its factorization.

57540551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48048.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 57540551 is about 7585.5488265517. The cubic root of 57540551 is about 386.0628438043.

The spelling of 57540551 in words is "fifty-seven million, five hundred forty thousand, five hundred fifty-one".