50097981 has 4 divisors (see below), whose sum is σ = 66797312. Its totient is φ = 33398652.

The previous prime is 50097973. The next prime is 50098033. The reversal of 50097981 is 18979005.

It is a happy number.

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 not a de Polignac number, because 50097981 - 2³ = 50097973 is a prime.

It is a super-2 number, since 2×50097981² = 5019615400552722, 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 (50097961) 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, 8349661 + ... + 8349666.

It is an arithmetic number, because the mean of its divisors is an integer number (16699328).

Almost surely, 2^50097981 is an apocalyptic number.

It is an amenable number.

50097981 is a deficient number, since it is larger than the sum of its proper divisors (16699331).

50097981 is a wasteful number, since it uses less digits than its factorization.

50097981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16699330.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 50097981 is about 7077.9927239296. The cubic root of 50097981 is about 368.6436362386.

The spelling of 50097981 in words is "fifty million, ninety-seven thousand, nine hundred eighty-one".