50442981 has 8 divisors (see below), whose sum is σ = 67334784. Its totient is φ = 33589920.

The previous prime is 50442971. The next prime is 50443009. The reversal of 50442981 is 18924405.

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

It is not a de Polignac number, because 50442981 - 2¹³ = 50434789 is a prime.

It is a super-2 number, since 2×50442981² = 5088988664332722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50442941) 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, 6496 + ... + 11961.

It is an arithmetic number, because the mean of its divisors is an integer number (8416848).

Almost surely, 2^50442981 is an apocalyptic number.

It is an amenable number.

50442981 is a deficient number, since it is larger than the sum of its proper divisors (16891803).

50442981 is a wasteful number, since it uses less digits than its factorization.

50442981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19371.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 50442981 is about 7102.3222258639. The cubic root of 50442981 is about 369.4879232217.

It can be divided in two parts, 504429 and 81, that added together give a triangular number (504510 = T₁₀₀₄).

The spelling of 50442981 in words is "fifty million, four hundred forty-two thousand, nine hundred eighty-one".