55451554 has 4 divisors (see below), whose sum is σ = 83177334. Its totient is φ = 27725776.

The previous prime is 55451537. The next prime is 55451581. The reversal of 55451554 is 45515455.

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., 52229529 + 3222025 = 7227^2 + 1795^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13862887 + ... + 13862890.

Almost surely, 2^55451554 is an apocalyptic number.

55451554 is a deficient number, since it is larger than the sum of its proper divisors (27725780).

55451554 is a wasteful number, since it uses less digits than its factorization.

55451554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27725779.

The product of its digits is 50000, while the sum is 34.

The square root of 55451554 is about 7446.5800203852. The cubic root of 55451554 is about 381.3331613267. Note that the first 3 decimals are identical.

The spelling of 55451554 in words is "fifty-five million, four hundred fifty-one thousand, five hundred fifty-four".