812507153 has 2 divisors, whose sum is σ = 812507154. Its totient is φ = 812507152.

The previous prime is 812507107. The next prime is 812507167. The reversal of 812507153 is 351705218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 767456209 + 45050944 = 27703^2 + 6712^2 .

It is a cyclic number.

It is not a de Polignac number, because 812507153 - 2¹⁰ = 812506129 is a prime.

It is not a weakly prime, because it can be changed into another prime (812507053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406253576 + 406253577.

It is an arithmetic number, because the mean of its divisors is an integer number (406253577).

Almost surely, 2^812507153 is an apocalyptic number.

It is an amenable number.

812507153 is a deficient number, since it is larger than the sum of its proper divisors (1).

812507153 is an equidigital number, since it uses as much as digits as its factorization.

812507153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 812507153 is about 28504.5110991225. The cubic root of 812507153 is about 933.1305275196.

The spelling of 812507153 in words is "eight hundred twelve million, five hundred seven thousand, one hundred fifty-three".