55048881 has 4 divisors (see below), whose sum is σ = 73398512. Its totient is φ = 36699252.

The previous prime is 55048853. The next prime is 55048883. The reversal of 55048881 is 18884055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55048881 - 2²² = 50854577 is a prime.

It is a super-2 number, since 2×55048881² = 6060758598704322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55048883) 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, 9174811 + ... + 9174816.

It is an arithmetic number, because the mean of its divisors is an integer number (18349628).

Almost surely, 2^55048881 is an apocalyptic number.

It is an amenable number.

55048881 is a deficient number, since it is larger than the sum of its proper divisors (18349631).

55048881 is a wasteful number, since it uses less digits than its factorization.

55048881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18349630.

The product of its (nonzero) digits is 51200, while the sum is 39.

The square root of 55048881 is about 7419.4933115409. The cubic root of 55048881 is about 380.4078746071.

The spelling of 55048881 in words is "fifty-five million, forty-eight thousand, eight hundred eighty-one".