55862978 has 8 divisors (see below), whose sum is σ = 85577472. Its totient is φ = 27337156.

The previous prime is 55862959. The next prime is 55862981. The reversal of 55862978 is 87926855.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55862978² = 6241344622056968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297050 + ... + 297237.

It is an arithmetic number, because the mean of its divisors is an integer number (10697184).

Almost surely, 2^55862978 is an apocalyptic number.

55862978 is a deficient number, since it is larger than the sum of its proper divisors (29714494).

55862978 is a wasteful number, since it uses less digits than its factorization.

55862978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594336.

The product of its digits is 1209600, while the sum is 50.

The square root of 55862978 is about 7474.1539989486. The cubic root of 55862978 is about 382.2739416386.

It can be divided in two parts, 558 and 62978, that added together give a palindrome (63536).

The spelling of 55862978 in words is "fifty-five million, eight hundred sixty-two thousand, nine hundred seventy-eight".