7561157 has 2 divisors, whose sum is σ = 7561158. Its totient is φ = 7561156.

The previous prime is 7561123. The next prime is 7561187. The reversal of 7561157 is 7511657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7150276 + 410881 = 2674^2 + 641^2 .

It is a cyclic number.

It is not a de Polignac number, because 7561157 - 2⁶ = 7561093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7561187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3780578 + 3780579.

It is an arithmetic number, because the mean of its divisors is an integer number (3780579).

Almost surely, 2^7561157 is an apocalyptic number.

It is an amenable number.

7561157 is a deficient number, since it is larger than the sum of its proper divisors (1).

7561157 is an equidigital number, since it uses as much as digits as its factorization.

7561157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7350, while the sum is 32.

The square root of 7561157 is about 2749.7558073400. The cubic root of 7561157 is about 196.2739903327.

The spelling of 7561157 in words is "seven million, five hundred sixty-one thousand, one hundred fifty-seven".