1531510151 has 2 divisors, whose sum is σ = 1531510152. Its totient is φ = 1531510150.

The previous prime is 1531510129. The next prime is 1531510157. The reversal of 1531510151 is 1510151351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1531510151 - 2²² = 1527315847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1531510157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765755075 + 765755076.

It is an arithmetic number, because the mean of its divisors is an integer number (765755076).

Almost surely, 2^1531510151 is an apocalyptic number.

1531510151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1531510151 is an equidigital number, since it uses as much as digits as its factorization.

1531510151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 375, while the sum is 23.

The square root of 1531510151 is about 39134.5135526175. The cubic root of 1531510151 is about 1152.6743433109.

The spelling of 1531510151 in words is "one billion, five hundred thirty-one million, five hundred ten thousand, one hundred fifty-one".