52578157862602 has 4 divisors (see below), whose sum is σ = 78867236793906. Its totient is φ = 26289078931300.

The previous prime is 52578157862597. The next prime is 52578157862641. The reversal of 52578157862602 is 20626875187525.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 52242408307881 + 335749554721 = 7227891^2 + 579439^2 .

It is a super-2 number, since 2×52578157862602² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13144539465649 + ... + 13144539465652.

Almost surely, 2^{52578157862602} is an apocalyptic number.

52578157862602 is a deficient number, since it is larger than the sum of its proper divisors (26289078931304).

52578157862602 is a wasteful number, since it uses less digits than its factorization.

52578157862602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26289078931303.

The product of its (nonzero) digits is 112896000, while the sum is 64.

The spelling of 52578157862602 in words is "fifty-two trillion, five hundred seventy-eight billion, one hundred fifty-seven million, eight hundred sixty-two thousand, six hundred two".