50561901 has 20 divisors (see below), whose sum is σ = 81342492. Its totient is φ = 31114368.

The previous prime is 50561891. The next prime is 50561921. The reversal of 50561901 is 10916505.

It can be written as a sum of positive squares in 2 ways, for example, as 7986276 + 42575625 = 2826^2 + 6525^2 .

It is not a de Polignac number, because 50561901 - 2¹³ = 50553709 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50561921) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22956 + ... + 25061.

Almost surely, 2^50561901 is an apocalyptic number.

It is an amenable number.

50561901 is a deficient number, since it is larger than the sum of its proper divisors (30780591).

50561901 is a wasteful number, since it uses less digits than its factorization.

50561901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48042 (or 48033 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 50561901 is about 7110.6892071022. The cubic root of 50561901 is about 369.7780529140.

The spelling of 50561901 in words is "fifty million, five hundred sixty-one thousand, nine hundred one".