50561091 has 30 divisors (see below), whose sum is σ = 87867780. Its totient is φ = 28889784.

The previous prime is 50561051. The next prime is 50561101. The reversal of 50561091 is 19016505.

It is not a de Polignac number, because 50561091 - 2¹⁴ = 50544707 is a prime.

It is a super-2 number, since 2×50561091² = 5112847846220562, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (50561011) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2401 + ... + 10338.

It is an arithmetic number, because the mean of its divisors is an integer number (2928926).

Almost surely, 2^50561091 is an apocalyptic number.

50561091 is a deficient number, since it is larger than the sum of its proper divisors (37306689).

50561091 is a wasteful number, since it uses less digits than its factorization.

50561091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12765 (or 12749 counting only the distinct ones).

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

The square root of 50561091 is about 7110.6322503699. The cubic root of 50561091 is about 369.7760782927.

Adding to 50561091 its reverse (19016505), we get a palindrome (69577596).

The spelling of 50561091 in words is "fifty million, five hundred sixty-one thousand, ninety-one".