50213981 has 8 divisors (see below), whose sum is σ = 51532800. Its totient is φ = 48902112.

The previous prime is 50213963. The next prime is 50213983. The reversal of 50213981 is 18931205.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50213981 is a prime.

It is a super-2 number, since 2×50213981² = 5042887775736722, 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 (50213983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14945 + ... + 17993.

It is an arithmetic number, because the mean of its divisors is an integer number (6441600).

Almost surely, 2^50213981 is an apocalyptic number.

It is an amenable number.

50213981 is a deficient number, since it is larger than the sum of its proper divisors (1318819).

50213981 is a wasteful number, since it uses less digits than its factorization.

50213981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3475.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 50213981 is about 7086.1823995717. The cubic root of 50213981 is about 368.9279437644.

The spelling of 50213981 in words is "fifty million, two hundred thirteen thousand, nine hundred eighty-one".