157454789 has 2 divisors, whose sum is σ = 157454790. Its totient is φ = 157454788.

The previous prime is 157454743. The next prime is 157454807. The reversal of 157454789 is 987454751.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151413025 + 6041764 = 12305^2 + 2458^2 .

It is a cyclic number.

It is not a de Polignac number, because 157454789 - 2²⁰ = 156406213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157454989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78727394 + 78727395.

It is an arithmetic number, because the mean of its divisors is an integer number (78727395).

Almost surely, 2^157454789 is an apocalyptic number.

It is an amenable number.

157454789 is a deficient number, since it is larger than the sum of its proper divisors (1).

157454789 is an equidigital number, since it uses as much as digits as its factorization.

157454789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1411200, while the sum is 50.

The square root of 157454789 is about 12548.0990193734. The cubic root of 157454789 is about 539.9894705309.

The spelling of 157454789 in words is "one hundred fifty-seven million, four hundred fifty-four thousand, seven hundred eighty-nine".