55530554 has 4 divisors (see below), whose sum is σ = 83295834. Its totient is φ = 27765276.

The previous prime is 55530529. The next prime is 55530577. The reversal of 55530554 is 45503555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45503555 = 5 ⋅9100711.

It can be written as a sum of positive squares in only one way, i.e., 28334329 + 27196225 = 5323^2 + 5215^2 .

It is a super-4 number, since 4×55530554⁴ (a number of 32 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55530554.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13882637 + ... + 13882640.

Almost surely, 2^55530554 is an apocalyptic number.

55530554 is a deficient number, since it is larger than the sum of its proper divisors (27765280).

55530554 is a wasteful number, since it uses less digits than its factorization.

55530554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27765279.

The product of its (nonzero) digits is 37500, while the sum is 32.

The square root of 55530554 is about 7451.8825809321. The cubic root of 55530554 is about 381.5141663224.

The spelling of 55530554 in words is "fifty-five million, five hundred thirty thousand, five hundred fifty-four".