55479851 has 4 divisors (see below), whose sum is σ = 63405552. Its totient is φ = 47554152.

The previous prime is 55479839. The next prime is 55479859. The reversal of 55479851 is 15897455.

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 55479851 - 2¹⁸ = 55217707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55479859) 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, 3962840 + ... + 3962853.

It is an arithmetic number, because the mean of its divisors is an integer number (15851388).

Almost surely, 2^55479851 is an apocalyptic number.

55479851 is a deficient number, since it is larger than the sum of its proper divisors (7925701).

55479851 is an equidigital number, since it uses as much as digits as its factorization.

55479851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7925700.

The product of its digits is 252000, while the sum is 44.

The square root of 55479851 is about 7448.4797777802. The cubic root of 55479851 is about 381.3980152321.

The spelling of 55479851 in words is "fifty-five million, four hundred seventy-nine thousand, eight hundred fifty-one".