51724411 has 4 divisors (see below), whose sum is σ = 52986024. Its totient is φ = 50462800.

The previous prime is 51724373. The next prime is 51724427. The reversal of 51724411 is 11442715.

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

It is not a de Polignac number, because 51724411 - 2⁹ = 51723899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51724471) 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, 630745 + ... + 630826.

It is an arithmetic number, because the mean of its divisors is an integer number (13246506).

Almost surely, 2^51724411 is an apocalyptic number.

51724411 is a deficient number, since it is larger than the sum of its proper divisors (1261613).

51724411 is a wasteful number, since it uses less digits than its factorization.

51724411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261612.

The product of its digits is 1120, while the sum is 25.

The square root of 51724411 is about 7191.9685066051. The cubic root of 51724411 is about 372.5905633892.

The spelling of 51724411 in words is "fifty-one million, seven hundred twenty-four thousand, four hundred eleven".