5100891 has 4 divisors (see below), whose sum is σ = 6801192. Its totient is φ = 3400592.

The previous prime is 5100889. The next prime is 5100899. The reversal of 5100891 is 1980015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5100891 - 2¹ = 5100889 is a prime.

It is an Ulam number.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (5100899) 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, 850146 + ... + 850151.

It is an arithmetic number, because the mean of its divisors is an integer number (1700298).

Almost surely, 2^5100891 is an apocalyptic number.

5100891 is a deficient number, since it is larger than the sum of its proper divisors (1700301).

5100891 is a wasteful number, since it uses less digits than its factorization.

5100891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700300.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 5100891 is about 2258.5152202277. The cubic root of 5100891 is about 172.1400855337.

The spelling of 5100891 in words is "five million, one hundred thousand, eight hundred ninety-one".