249575401 has 2 divisors, whose sum is σ = 249575402. Its totient is φ = 249575400.

The previous prime is 249575341. The next prime is 249575407. The reversal of 249575401 is 104575942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241025625 + 8549776 = 15525^2 + 2924^2 .

It is a cyclic number.

It is not a de Polignac number, because 249575401 - 2¹⁵ = 249542633 is a prime.

It is equal to p_13657375 and since 249575401 and 13657375 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (249575407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124787700 + 124787701.

It is an arithmetic number, because the mean of its divisors is an integer number (124787701).

Almost surely, 2^249575401 is an apocalyptic number.

It is an amenable number.

249575401 is a deficient number, since it is larger than the sum of its proper divisors (1).

249575401 is an equidigital number, since it uses as much as digits as its factorization.

249575401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 249575401 is about 15797.9555955826. The cubic root of 249575401 is about 629.6036820390.

The spelling of 249575401 in words is "two hundred forty-nine million, five hundred seventy-five thousand, four hundred one".