51722774 has 4 divisors (see below), whose sum is σ = 77584164. Its totient is φ = 25861386.

The previous prime is 51722761. The next prime is 51722777. The reversal of 51722774 is 47722715.

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

It is a super-3 number, since 3×51722774³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51722777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12930692 + ... + 12930695.

It is an arithmetic number, because the mean of its divisors is an integer number (19396041).

Almost surely, 2^51722774 is an apocalyptic number.

51722774 is a deficient number, since it is larger than the sum of its proper divisors (25861390).

51722774 is a wasteful number, since it uses less digits than its factorization.

51722774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25861389.

The product of its digits is 27440, while the sum is 35.

The square root of 51722774 is about 7191.8546981985. The cubic root of 51722774 is about 372.5866327037.

The spelling of 51722774 in words is "fifty-one million, seven hundred twenty-two thousand, seven hundred seventy-four".