653506157 has 2 divisors, whose sum is σ = 653506158. Its totient is φ = 653506156.

The previous prime is 653506123. The next prime is 653506177. The reversal of 653506157 is 751605356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 589809796 + 63696361 = 24286^2 + 7981^2 .

It is a cyclic number.

It is not a de Polignac number, because 653506157 - 2⁸ = 653505901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 653506157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653506177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326753078 + 326753079.

It is an arithmetic number, because the mean of its divisors is an integer number (326753079).

Almost surely, 2^653506157 is an apocalyptic number.

It is an amenable number.

653506157 is a deficient number, since it is larger than the sum of its proper divisors (1).

653506157 is an equidigital number, since it uses as much as digits as its factorization.

653506157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 653506157 is about 25563.7664869635. The cubic root of 653506157 is about 867.7938364630.

The spelling of 653506157 in words is "six hundred fifty-three million, five hundred six thousand, one hundred fifty-seven".