55275277550 has 24 divisors (see below), whose sum is σ = 102841725000. Its totient is φ = 22103722080.

The previous prime is 55275277531. The next prime is 55275277567. The reversal of 55275277550 is 5577257255.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50).

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, 16976 + ... + 332924.

It is an arithmetic number, because the mean of its divisors is an integer number (4285071875).

Almost surely, 2^55275277550 is an apocalyptic number.

55275277550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55275277550 is a deficient number, since it is larger than the sum of its proper divisors (47566447450).

55275277550 is a wasteful number, since it uses less digits than its factorization.

55275277550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319460 (or 319455 counting only the distinct ones).

The product of its (nonzero) digits is 4287500, while the sum is 50.

The spelling of 55275277550 in words is "fifty-five billion, two hundred seventy-five million, two hundred seventy-seven thousand, five hundred fifty".