157240093 has 2 divisors, whose sum is σ = 157240094. Its totient is φ = 157240092.

The previous prime is 157240087. The next prime is 157240183. The reversal of 157240093 is 390042751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105945849 + 51294244 = 10293^2 + 7162^2 .

It is a cyclic number.

It is not a de Polignac number, because 157240093 - 2¹³ = 157231901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157240003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78620046 + 78620047.

It is an arithmetic number, because the mean of its divisors is an integer number (78620047).

Almost surely, 2^157240093 is an apocalyptic number.

It is an amenable number.

157240093 is a deficient number, since it is larger than the sum of its proper divisors (1).

157240093 is an equidigital number, since it uses as much as digits as its factorization.

157240093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 157240093 is about 12539.5411798040. The cubic root of 157240093 is about 539.7439263688.

The spelling of 157240093 in words is "one hundred fifty-seven million, two hundred forty thousand, ninety-three".