55407748 has 48 divisors (see below), whose sum is σ = 110496960. Its totient is φ = 24080000.

The previous prime is 55407733. The next prime is 55407767. The reversal of 55407748 is 84770455.

It is a self number, because there is not a number n which added to its sum of digits gives 55407748.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220623 + ... + 220873.

It is an arithmetic number, because the mean of its divisors is an integer number (2302020).

Almost surely, 2^55407748 is an apocalyptic number.

55407748 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

55407748 is a deficient number, since it is larger than the sum of its proper divisors (55089212).

55407748 is a wasteful number, since it uses less digits than its factorization.

55407748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 55407748 is about 7443.6380889992. The cubic root of 55407748 is about 381.2327188082.

The spelling of 55407748 in words is "fifty-five million, four hundred seven thousand, seven hundred forty-eight".