55878307 has 4 divisors (see below), whose sum is σ = 56044456. Its totient is φ = 55712160.

The previous prime is 55878301. The next prime is 55878311. The reversal of 55878307 is 70387855.

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

It is a cyclic number.

It is not a de Polignac number, because 55878307 - 2³ = 55878299 is a prime.

It is a pancake number, because a pancake can be divided into 55878307 parts by 10571 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55878301) 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, 82569 + ... + 83242.

It is an arithmetic number, because the mean of its divisors is an integer number (14011114).

Almost surely, 2^55878307 is an apocalyptic number.

55878307 is a deficient number, since it is larger than the sum of its proper divisors (166149).

55878307 is a wasteful number, since it uses less digits than its factorization.

55878307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166148.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 55878307 is about 7475.1793958406. The cubic root of 55878307 is about 382.3089042175.

The spelling of 55878307 in words is "fifty-five million, eight hundred seventy-eight thousand, three hundred seven".