55479994 has 4 divisors (see below), whose sum is σ = 83219994. Its totient is φ = 27739996.

The previous prime is 55479989. The next prime is 55479997. The reversal of 55479994 is 49997455.

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

It can be written as a sum of positive squares in only one way, i.e., 46854025 + 8625969 = 6845^2 + 2937^2 .

It is not an unprimeable number, because it can be changed into a prime (55479997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13869997 + ... + 13870000.

Almost surely, 2^55479994 is an apocalyptic number.

55479994 is a deficient number, since it is larger than the sum of its proper divisors (27740000).

55479994 is a wasteful number, since it uses less digits than its factorization.

55479994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27739999.

The product of its digits is 2041200, while the sum is 52.

The square root of 55479994 is about 7448.4893770482. The cubic root of 55479994 is about 381.3983429178.

The spelling of 55479994 in words is "fifty-five million, four hundred seventy-nine thousand, nine hundred ninety-four".