55132555 has 4 divisors (see below), whose sum is σ = 66159072. Its totient is φ = 44106040.

The previous prime is 55132531. The next prime is 55132603. The reversal of 55132555 is 55523155.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55523155 = 5 ⋅11104631.

It is not a de Polignac number, because 55132555 - 2²³ = 46743947 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5513251 + ... + 5513260.

It is an arithmetic number, because the mean of its divisors is an integer number (16539768).

Almost surely, 2^55132555 is an apocalyptic number.

55132555 is a deficient number, since it is larger than the sum of its proper divisors (11026517).

55132555 is a wasteful number, since it uses less digits than its factorization.

55132555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11026516.

The product of its digits is 18750, while the sum is 31.

The square root of 55132555 is about 7425.1299651925. The cubic root of 55132555 is about 380.6005163361.

The spelling of 55132555 in words is "fifty-five million, one hundred thirty-two thousand, five hundred fifty-five".