157513903 has 2 divisors, whose sum is σ = 157513904. Its totient is φ = 157513902.

The previous prime is 157513901. The next prime is 157513907. The reversal of 157513903 is 309315751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157513903 - 2¹ = 157513901 is a prime.

Together with 157513901, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157513901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78756951 + 78756952.

It is an arithmetic number, because the mean of its divisors is an integer number (78756952).

Almost surely, 2^157513903 is an apocalyptic number.

157513903 is the 6709-th centered heptagonal number.

157513903 is a deficient number, since it is larger than the sum of its proper divisors (1).

157513903 is an equidigital number, since it uses as much as digits as its factorization.

157513903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14175, while the sum is 34.

The square root of 157513903 is about 12550.4542945664. The cubic root of 157513903 is about 540.0570390137.

The spelling of 157513903 in words is "one hundred fifty-seven million, five hundred thirteen thousand, nine hundred three".