252400061 has 2 divisors, whose sum is σ = 252400062. Its totient is φ = 252400060.

The previous prime is 252400039. The next prime is 252400069. The reversal of 252400061 is 160004252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132388036 + 120012025 = 11506^2 + 10955^2 .

It is a cyclic number.

It is not a de Polignac number, because 252400061 - 2⁶ = 252399997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252400069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126200030 + 126200031.

It is an arithmetic number, because the mean of its divisors is an integer number (126200031).

Almost surely, 2^252400061 is an apocalyptic number.

It is an amenable number.

252400061 is a deficient number, since it is larger than the sum of its proper divisors (1).

252400061 is an equidigital number, since it uses as much as digits as its factorization.

252400061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 252400061 is about 15887.1036063846. The cubic root of 252400061 is about 631.9700329286.

The spelling of 252400061 in words is "two hundred fifty-two million, four hundred thousand, sixty-one".