400603157 has 2 divisors, whose sum is σ = 400603158. Its totient is φ = 400603156.

The previous prime is 400603141. The next prime is 400603171. The reversal of 400603157 is 751306004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261339556 + 139263601 = 16166^2 + 11801^2 .

It is a cyclic number.

It is not a de Polignac number, because 400603157 - 2⁴ = 400603141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400603127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200301578 + 200301579.

It is an arithmetic number, because the mean of its divisors is an integer number (200301579).

Almost surely, 2^400603157 is an apocalyptic number.

It is an amenable number.

400603157 is a deficient number, since it is larger than the sum of its proper divisors (1).

400603157 is an equidigital number, since it uses as much as digits as its factorization.

400603157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 400603157 is about 20015.0732449322. The cubic root of 400603157 is about 737.1764553032.

The spelling of 400603157 in words is "four hundred million, six hundred three thousand, one hundred fifty-seven".