50978997 has 16 divisors (see below), whose sum is σ = 75816000. Its totient is φ = 33854832.

The previous prime is 50978953. The next prime is 50979023. The reversal of 50978997 is 79987905.

It is not a de Polignac number, because 50978997 - 2¹¹ = 50976949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50978927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3754 + ... + 10772.

It is an arithmetic number, because the mean of its divisors is an integer number (4738500).

Almost surely, 2^50978997 is an apocalyptic number.

It is an amenable number.

50978997 is a deficient number, since it is larger than the sum of its proper divisors (24837003).

50978997 is a wasteful number, since it uses less digits than its factorization.

50978997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7297 (or 7291 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The square root of 50978997 is about 7139.9577729844. The cubic root of 50978997 is about 370.7920626489.

The spelling of 50978997 in words is "fifty million, nine hundred seventy-eight thousand, nine hundred ninety-seven".