151599961 has 2 divisors, whose sum is σ = 151599962. Its totient is φ = 151599960.

The previous prime is 151599949. The next prime is 151599979. The reversal of 151599961 is 169995151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81793936 + 69806025 = 9044^2 + 8355^2 .

It is an emirp because it is prime and its reverse (169995151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151599961 - 2¹¹ = 151597913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (151599941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75799980 + 75799981.

It is an arithmetic number, because the mean of its divisors is an integer number (75799981).

Almost surely, 2^151599961 is an apocalyptic number.

It is an amenable number.

151599961 is a deficient number, since it is larger than the sum of its proper divisors (1).

151599961 is an equidigital number, since it uses as much as digits as its factorization.

151599961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109350, while the sum is 46.

The square root of 151599961 is about 12312.5935935529. The cubic root of 151599961 is about 533.2117321292.

The spelling of 151599961 in words is "one hundred fifty-one million, five hundred ninety-nine thousand, nine hundred sixty-one".