51722498 has 8 divisors (see below), whose sum is σ = 77807100. Its totient is φ = 25786800.

The previous prime is 51722497. The next prime is 51722501. The reversal of 51722498 is 89422715.

It can be written as a sum of positive squares in 2 ways, for example, as 51222649 + 499849 = 7157^2 + 707^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51722497) 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, 36353 + ... + 37748.

Almost surely, 2^51722498 is an apocalyptic number.

51722498 is a deficient number, since it is larger than the sum of its proper divisors (26084602).

51722498 is a wasteful number, since it uses less digits than its factorization.

51722498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74452.

The product of its digits is 40320, while the sum is 38.

The square root of 51722498 is about 7191.8355097986. The cubic root of 51722498 is about 372.5859699776.

The spelling of 51722498 in words is "fifty-one million, seven hundred twenty-two thousand, four hundred ninety-eight".