472749157 has 2 divisors, whose sum is σ = 472749158. Its totient is φ = 472749156.

The previous prime is 472749149. The next prime is 472749161. The reversal of 472749157 is 751947274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308037601 + 164711556 = 17551^2 + 12834^2 .

It is a cyclic number.

It is not a de Polignac number, because 472749157 - 2³ = 472749149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472749197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236374578 + 236374579.

It is an arithmetic number, because the mean of its divisors is an integer number (236374579).

Almost surely, 2^472749157 is an apocalyptic number.

It is an amenable number.

472749157 is a deficient number, since it is larger than the sum of its proper divisors (1).

472749157 is an equidigital number, since it uses as much as digits as its factorization.

472749157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 46.

The square root of 472749157 is about 21742.7955194359. The cubic root of 472749157 is about 779.0109955861.

The spelling of 472749157 in words is "four hundred seventy-two million, seven hundred forty-nine thousand, one hundred fifty-seven".