151320857 has 2 divisors, whose sum is σ = 151320858. Its totient is φ = 151320856.

The previous prime is 151320853. The next prime is 151320919. The reversal of 151320857 is 758023151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90231001 + 61089856 = 9499^2 + 7816^2 .

It is an emirp because it is prime and its reverse (758023151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151320857 - 2² = 151320853 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (151320853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75660428 + 75660429.

It is an arithmetic number, because the mean of its divisors is an integer number (75660429).

Almost surely, 2^151320857 is an apocalyptic number.

It is an amenable number.

151320857 is a deficient number, since it is larger than the sum of its proper divisors (1).

151320857 is an equidigital number, since it uses as much as digits as its factorization.

151320857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 151320857 is about 12301.2542856410. The cubic root of 151320857 is about 532.8843069122.

The spelling of 151320857 in words is "one hundred fifty-one million, three hundred twenty thousand, eight hundred fifty-seven".