51407873 has 4 divisors (see below), whose sum is σ = 56081328. Its totient is φ = 46734420.

The previous prime is 51407861. The next prime is 51407879. The reversal of 51407873 is 37870415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51407873 - 2⁴ = 51407857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51407879) 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, 2336711 + ... + 2336732.

It is an arithmetic number, because the mean of its divisors is an integer number (14020332).

Almost surely, 2^51407873 is an apocalyptic number.

It is an amenable number.

51407873 is a deficient number, since it is larger than the sum of its proper divisors (4673455).

51407873 is a wasteful number, since it uses less digits than its factorization.

51407873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4673454.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 51407873 is about 7169.9283817902. The cubic root of 51407873 is about 371.8289598912.

The spelling of 51407873 in words is "fifty-one million, four hundred seven thousand, eight hundred seventy-three".