157090501 has 2 divisors, whose sum is σ = 157090502. Its totient is φ = 157090500.

The previous prime is 157090487. The next prime is 157090513. The reversal of 157090501 is 105090751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142229476 + 14861025 = 11926^2 + 3855^2 .

It is a cyclic number.

It is not a de Polignac number, because 157090501 - 2¹¹ = 157088453 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157090501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157090541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78545250 + 78545251.

It is an arithmetic number, because the mean of its divisors is an integer number (78545251).

Almost surely, 2^157090501 is an apocalyptic number.

It is an amenable number.

157090501 is a deficient number, since it is larger than the sum of its proper divisors (1).

157090501 is an equidigital number, since it uses as much as digits as its factorization.

157090501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 157090501 is about 12533.5749489122. The cubic root of 157090501 is about 539.5727083922.

The spelling of 157090501 in words is "one hundred fifty-seven million, ninety thousand, five hundred one".