151938257 has 2 divisors, whose sum is σ = 151938258. Its totient is φ = 151938256.

The previous prime is 151938233. The next prime is 151938277. The reversal of 151938257 is 752839151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130325056 + 21613201 = 11416^2 + 4649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151938257 is a prime.

It is not a weakly prime, because it can be changed into another prime (151938217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75969128 + 75969129.

It is an arithmetic number, because the mean of its divisors is an integer number (75969129).

Almost surely, 2^151938257 is an apocalyptic number.

It is an amenable number.

151938257 is a deficient number, since it is larger than the sum of its proper divisors (1).

151938257 is an equidigital number, since it uses as much as digits as its factorization.

151938257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 41.

The square root of 151938257 is about 12326.3237423005. The cubic root of 151938257 is about 533.6080589391.

The spelling of 151938257 in words is "one hundred fifty-one million, nine hundred thirty-eight thousand, two hundred fifty-seven".