55878474 has 8 divisors (see below), whose sum is σ = 111756960. Its totient is φ = 18626156.

The previous prime is 55878437. The next prime is 55878479. The reversal of 55878474 is 47487855.

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

55878474 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55878479) 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, 4656534 + ... + 4656545.

It is an arithmetic number, because the mean of its divisors is an integer number (13969620).

Almost surely, 2^55878474 is an apocalyptic number.

55878474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55878474 is a wasteful number, since it uses less digits than its factorization.

55878474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9313084.

The product of its digits is 1254400, while the sum is 48.

The square root of 55878474 is about 7475.1905661327. The cubic root of 55878474 is about 382.3092850781.

The spelling of 55878474 in words is "fifty-five million, eight hundred seventy-eight thousand, four hundred seventy-four".