157544869 has 2 divisors, whose sum is σ = 157544870. Its totient is φ = 157544868.

The previous prime is 157544861. The next prime is 157544887. The reversal of 157544869 is 968445751.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94342369 + 63202500 = 9713^2 + 7950^2 .

It is a cyclic number.

It is not a de Polignac number, because 157544869 - 2³ = 157544861 is a prime.

It is a super-2 number, since 2×157544869² = 49640771496454322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157544861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78772434 + 78772435.

It is an arithmetic number, because the mean of its divisors is an integer number (78772435).

Almost surely, 2^157544869 is an apocalyptic number.

It is an amenable number.

157544869 is a deficient number, since it is larger than the sum of its proper divisors (1).

157544869 is an equidigital number, since it uses as much as digits as its factorization.

157544869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 49.

The square root of 157544869 is about 12551.6878944626. The cubic root of 157544869 is about 540.0924270233.

The spelling of 157544869 in words is "one hundred fifty-seven million, five hundred forty-four thousand, eight hundred sixty-nine".