55388763 has 24 divisors (see below), whose sum is σ = 82162080. Its totient is φ = 35942400.

The previous prime is 55388719. The next prime is 55388777. The reversal of 55388763 is 36788355.

It is not a de Polignac number, because 55388763 - 2¹³ = 55380571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55388783) 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, 71643 + ... + 72411.

It is an arithmetic number, because the mean of its divisors is an integer number (3423420).

Almost surely, 2^55388763 is an apocalyptic number.

55388763 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

55388763 is a deficient number, since it is larger than the sum of its proper divisors (26773317).

55388763 is a wasteful number, since it uses less digits than its factorization.

55388763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 976 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 55388763 is about 7442.3627296713. The cubic root of 55388763 is about 381.1891717699.

The spelling of 55388763 in words is "fifty-five million, three hundred eighty-eight thousand, seven hundred sixty-three".