55509950 has 24 divisors (see below), whose sum is σ = 103955400. Its totient is φ = 22052000.

The previous prime is 55509931. The next prime is 55509977. The reversal of 55509950 is 5990555.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3725 + ... + 11175.

It is an arithmetic number, because the mean of its divisors is an integer number (4331475).

Almost surely, 2^55509950 is an apocalyptic number.

55509950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a pronic number, being equal to 7450×7451.

55509950 is a deficient number, since it is larger than the sum of its proper divisors (48445450).

55509950 is a wasteful number, since it uses less digits than its factorization.

55509950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7612 (or 7607 counting only the distinct ones).

The product of its (nonzero) digits is 50625, while the sum is 38.

The square root of 55509950 is about 7450.4999832226. The cubic root of 55509950 is about 381.4669749432.

The spelling of 55509950 in words is "fifty-five million, five hundred nine thousand, nine hundred fifty".