151531651 has 2 divisors, whose sum is σ = 151531652. Its totient is φ = 151531650.

The previous prime is 151531649. The next prime is 151531657. The reversal of 151531651 is 156135151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 151531651 - 2¹ = 151531649 is a prime.

Together with 151531649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (151531657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75765825 + 75765826.

It is an arithmetic number, because the mean of its divisors is an integer number (75765826).

Almost surely, 2^151531651 is an apocalyptic number.

151531651 is a deficient number, since it is larger than the sum of its proper divisors (1).

151531651 is an equidigital number, since it uses as much as digits as its factorization.

151531651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2250, while the sum is 28.

The square root of 151531651 is about 12309.8192919311. The cubic root of 151531651 is about 533.1316328000.

The spelling of 151531651 in words is "one hundred fifty-one million, five hundred thirty-one thousand, six hundred fifty-one".