157093661 has 2 divisors, whose sum is σ = 157093662. Its totient is φ = 157093660.

The previous prime is 157093649. The next prime is 157093669. The reversal of 157093661 is 166390751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127554436 + 29539225 = 11294^2 + 5435^2 .

It is a cyclic number.

It is not a de Polignac number, because 157093661 - 2⁶ = 157093597 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157093669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78546830 + 78546831.

It is an arithmetic number, because the mean of its divisors is an integer number (78546831).

Almost surely, 2^157093661 is an apocalyptic number.

It is an amenable number.

157093661 is a deficient number, since it is larger than the sum of its proper divisors (1).

157093661 is an equidigital number, since it uses as much as digits as its factorization.

157093661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 157093661 is about 12533.7010096779. The cubic root of 157093661 is about 539.5763263455.

The spelling of 157093661 in words is "one hundred fifty-seven million, ninety-three thousand, six hundred sixty-one".