55072450 has 48 divisors (see below), whose sum is σ = 111600000. Its totient is φ = 20139840.

The previous prime is 55072427. The next prime is 55072453. The reversal of 55072450 is 5427055.

It is not an unprimeable number, because it can be changed into a prime (55072453) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 26551 + ... + 28549.

It is an arithmetic number, because the mean of its divisors is an integer number (2325000).

Almost surely, 2^55072450 is an apocalyptic number.

55072450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55072450 is an abundant number, since it is smaller than the sum of its proper divisors (56527550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55072450 is a wasteful number, since it uses less digits than its factorization.

55072450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059 (or 2054 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 55072450 is about 7421.0814575775. The cubic root of 55072450 is about 380.4621569938.

The spelling of 55072450 in words is "fifty-five million, seventy-two thousand, four hundred fifty".