53257004578 has 4 divisors (see below), whose sum is σ = 79885506870. Its totient is φ = 26628502288.

The previous prime is 53257004569. The next prime is 53257004627. The reversal of 53257004578 is 87540075235.

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., 41319912529 + 11937092049 = 203273^2 + 109257^2 .

It is a super-2 number, since 2×53257004578² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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, 13314251143 + ... + 13314251146.

Almost surely, 2^53257004578 is an apocalyptic number.

53257004578 is a deficient number, since it is larger than the sum of its proper divisors (26628502292).

53257004578 is a wasteful number, since it uses less digits than its factorization.

53257004578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26628502291.

The product of its (nonzero) digits is 1176000, while the sum is 46.

The spelling of 53257004578 in words is "fifty-three billion, two hundred fifty-seven million, four thousand, five hundred seventy-eight".