157985351 has 2 divisors, whose sum is σ = 157985352. Its totient is φ = 157985350.

The previous prime is 157985339. The next prime is 157985383. The reversal of 157985351 is 153589751.

It is a happy number.

157985351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157985351 - 2⁶ = 157985287 is a prime.

It is a super-2 number, since 2×157985351² = 49918742261186402, which contains 22 as substring.

It is a Chen prime.

It is equal to p_8867870 and since 157985351 and 8867870 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157985251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78992675 + 78992676.

It is an arithmetic number, because the mean of its divisors is an integer number (78992676).

Almost surely, 2^157985351 is an apocalyptic number.

157985351 is a deficient number, since it is larger than the sum of its proper divisors (1).

157985351 is an equidigital number, since it uses as much as digits as its factorization.

157985351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189000, while the sum is 44.

The square root of 157985351 is about 12569.2223705367. Note that the first 3 decimals coincide. The cubic root of 157985351 is about 540.5953094100.

The spelling of 157985351 in words is "one hundred fifty-seven million, nine hundred eighty-five thousand, three hundred fifty-one".