978136552 has 48 divisors (see below), whose sum is σ = 1936111680. Its totient is φ = 463050720.

The previous prime is 978136543. The next prime is 978136561. The reversal of 978136552 is 255631879.

It is an interprime number because it is at equal distance from previous prime (978136543) and next prime (978136561).

It is a super-2 number, since 2×978136552² = 1913502228716897408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 359983 + ... + 362689.

It is an arithmetic number, because the mean of its divisors is an integer number (40335660).

Almost surely, 2^978136552 is an apocalyptic number.

It is an amenable number.

978136552 is a deficient number, since it is larger than the sum of its proper divisors (957975128).

978136552 is a wasteful number, since it uses less digits than its factorization.

978136552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822 (or 2787 counting only the distinct ones).

The product of its digits is 453600, while the sum is 46.

The square root of 978136552 is about 31275.1746917583. The cubic root of 978136552 is about 992.6584170609.

The spelling of 978136552 in words is "nine hundred seventy-eight million, one hundred thirty-six thousand, five hundred fifty-two".