50297981 has 4 divisors (see below), whose sum is σ = 50321472. Its totient is φ = 50274492.

The previous prime is 50297927. The next prime is 50297999. The reversal of 50297981 is 18979205.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50297981 - 2¹⁰ = 50296957 is a prime.

It is a super-2 number, since 2×50297981² = 5059773785352722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50297081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8171 + ... + 12936.

It is an arithmetic number, because the mean of its divisors is an integer number (12580368).

Almost surely, 2^50297981 is an apocalyptic number.

It is an amenable number.

50297981 is a deficient number, since it is larger than the sum of its proper divisors (23491).

50297981 is a wasteful number, since it uses less digits than its factorization.

50297981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23490.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 50297981 is about 7092.1069506882. The cubic root of 50297981 is about 369.1335484073.

The spelling of 50297981 in words is "fifty million, two hundred ninety-seven thousand, nine hundred eighty-one".