55240450 has 48 divisors (see below), whose sum is σ = 107207424. Its totient is φ = 21153600.

The previous prime is 55240439. The next prime is 55240453. The reversal of 55240450 is 5404255.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (55240453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243237 + ... + 243463.

It is an arithmetic number, because the mean of its divisors is an integer number (2233488).

Almost surely, 2^55240450 is an apocalyptic number.

55240450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55240450 is a deficient number, since it is larger than the sum of its proper divisors (51966974).

55240450 is a wasteful number, since it uses less digits than its factorization.

55240450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 55240450 is about 7432.3919433787. The cubic root of 55240450 is about 380.8486343107.

The spelling of 55240450 in words is "fifty-five million, two hundred forty thousand, four hundred fifty".