51722533 has 2 divisors, whose sum is σ = 51722534. Its totient is φ = 51722532.

The previous prime is 51722501. The next prime is 51722537. The reversal of 51722533 is 33522715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50027329 + 1695204 = 7073^2 + 1302^2 .

It is a cyclic number.

It is not a de Polignac number, because 51722533 - 2⁵ = 51722501 is a prime.

It is equal to p_3098134 and since 51722533 and 3098134 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51722537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25861266 + 25861267.

It is an arithmetic number, because the mean of its divisors is an integer number (25861267).

Almost surely, 2^51722533 is an apocalyptic number.

It is an amenable number.

51722533 is a deficient number, since it is larger than the sum of its proper divisors (1).

51722533 is an equidigital number, since it uses as much as digits as its factorization.

51722533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 28.

The square root of 51722533 is about 7191.8379431130. The cubic root of 51722533 is about 372.5860540191.

The spelling of 51722533 in words is "fifty-one million, seven hundred twenty-two thousand, five hundred thirty-three".