157648121 has 2 divisors, whose sum is σ = 157648122. Its totient is φ = 157648120.

The previous prime is 157648093. The next prime is 157648133. The reversal of 157648121 is 121846751.

157648121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155276521 + 2371600 = 12461^2 + 1540^2 .

It is a cyclic number.

It is not a de Polignac number, because 157648121 - 2¹⁰ = 157647097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (157648721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78824060 + 78824061.

It is an arithmetic number, because the mean of its divisors is an integer number (78824061).

Almost surely, 2^157648121 is an apocalyptic number.

It is an amenable number.

157648121 is a deficient number, since it is larger than the sum of its proper divisors (1).

157648121 is an equidigital number, since it uses as much as digits as its factorization.

157648121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 35.

The square root of 157648121 is about 12555.8002930916. The cubic root of 157648121 is about 540.2103901269.

The spelling of 157648121 in words is "one hundred fifty-seven million, six hundred forty-eight thousand, one hundred twenty-one".