540170857 has 4 divisors (see below), whose sum is σ = 540225616. Its totient is φ = 540116100.

The previous prime is 540170821. The next prime is 540170863. The reversal of 540170857 is 758071045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 758071045 = 5 ⋅151614209.

It is a cyclic number.

It is not a de Polignac number, because 540170857 - 2²³ = 531782249 is a prime.

It is a super-2 number, since 2×540170857² = 583569109504228898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540174857) 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, 8019 + ... + 33832.

It is an arithmetic number, because the mean of its divisors is an integer number (135056404).

Almost surely, 2^540170857 is an apocalyptic number.

It is an amenable number.

540170857 is a deficient number, since it is larger than the sum of its proper divisors (54759).

540170857 is a wasteful number, since it uses less digits than its factorization.

540170857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54758.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 540170857 is about 23241.5760438056. The cubic root of 540170857 is about 814.4111605981.

The spelling of 540170857 in words is "five hundred forty million, one hundred seventy thousand, eight hundred fifty-seven".