55858899 has 16 divisors (see below), whose sum is σ = 76026240. Its totient is φ = 36470400.

The previous prime is 55858897. The next prime is 55858939. The reversal of 55858899 is 99885855.

It is not a de Polignac number, because 55858899 - 2¹ = 55858897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55858897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70584 + ... + 71370.

It is an arithmetic number, because the mean of its divisors is an integer number (4751640).

Almost surely, 2^55858899 is an apocalyptic number.

55858899 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

55858899 is a deficient number, since it is larger than the sum of its proper divisors (20167341).

55858899 is a wasteful number, since it uses less digits than its factorization.

55858899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250.

The product of its digits is 5184000, while the sum is 57.

The square root of 55858899 is about 7473.8811202748. The cubic root of 55858899 is about 382.2646371259.

The spelling of 55858899 in words is "fifty-five million, eight hundred fifty-eight thousand, eight hundred ninety-nine".