57540266 has 16 divisors (see below), whose sum is σ = 99195840. Its totient is φ = 24521280.

The previous prime is 57540239. The next prime is 57540269. The reversal of 57540266 is 66204575.

It is a super-2 number, since 2×57540266² = 6621764422701512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57540269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8975 + ... + 13986.

It is an arithmetic number, because the mean of its divisors is an integer number (6199740).

Almost surely, 2^57540266 is an apocalyptic number.

57540266 is a deficient number, since it is larger than the sum of its proper divisors (41655574).

57540266 is a wasteful number, since it uses less digits than its factorization.

57540266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23149.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 57540266 is about 7585.5300408080. The cubic root of 57540266 is about 386.0622064098.

The spelling of 57540266 in words is "fifty-seven million, five hundred forty thousand, two hundred sixty-six".