157020403 has 2 divisors, whose sum is σ = 157020404. Its totient is φ = 157020402.

The previous prime is 157020359. The next prime is 157020407. The reversal of 157020403 is 304020751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157020403 - 2¹⁷ = 156889331 is a prime.

It is not a weakly prime, because it can be changed into another prime (157020407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78510201 + 78510202.

It is an arithmetic number, because the mean of its divisors is an integer number (78510202).

Almost surely, 2^157020403 is an apocalyptic number.

157020403 is a deficient number, since it is larger than the sum of its proper divisors (1).

157020403 is an equidigital number, since it uses as much as digits as its factorization.

157020403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 157020403 is about 12530.7782280272. The cubic root of 157020403 is about 539.4924391742.

The spelling of 157020403 in words is "one hundred fifty-seven million, twenty thousand, four hundred three".