50997387 has 54 divisors (see below), whose sum is σ = 86259924. Its totient is φ = 26717040.

The previous prime is 50997379. The next prime is 50997391. The reversal of 50997387 is 78379905.

It is not a de Polignac number, because 50997387 - 2³ = 50997379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50997337) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1645062 + ... + 1645092.

It is an arithmetic number, because the mean of its divisors is an integer number (1597406).

Almost surely, 2^50997387 is an apocalyptic number.

50997387 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

50997387 is a deficient number, since it is larger than the sum of its proper divisors (35262537).

50997387 is a wasteful number, since it uses less digits than its factorization.

50997387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 50997387 is about 7141.2454796065. The cubic root of 50997387 is about 370.8366434021.

Multiplying 50997387 by its sum of digits (48), we get a square (2447874576 = 49476²).

The spelling of 50997387 in words is "fifty million, nine hundred ninety-seven thousand, three hundred eighty-seven".