1551151157 has 2 divisors, whose sum is σ = 1551151158. Its totient is φ = 1551151156.

The previous prime is 1551151141. The next prime is 1551151181. The reversal of 1551151157 is 7511511551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1255001476 + 296149681 = 35426^2 + 17209^2 .

It is a cyclic number.

It is not a de Polignac number, because 1551151157 - 2⁴ = 1551151141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1551151117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775575578 + 775575579.

It is an arithmetic number, because the mean of its divisors is an integer number (775575579).

Almost surely, 2^1551151157 is an apocalyptic number.

It is an amenable number.

1551151157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551151157 is an equidigital number, since it uses as much as digits as its factorization.

1551151157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4375, while the sum is 32.

The square root of 1551151157 is about 39384.6563651379. The cubic root of 1551151157 is about 1157.5809569457.

The spelling of 1551151157 in words is "one billion, five hundred fifty-one million, one hundred fifty-one thousand, one hundred fifty-seven".