157753809 has 6 divisors (see below), whose sum is σ = 227866626. Its totient is φ = 105169200.

The previous prime is 157753807. The next prime is 157753853. The reversal of 157753809 is 908357751.

It can be written as a sum of positive squares in only one way, i.e., 136960209 + 20793600 = 11703^2 + 4560^2 .

It is not a de Polignac number, because 157753809 - 2¹ = 157753807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157753807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8764092 + ... + 8764109.

It is an arithmetic number, because the mean of its divisors is an integer number (37977771).

Almost surely, 2^157753809 is an apocalyptic number.

It is an amenable number.

157753809 is a deficient number, since it is larger than the sum of its proper divisors (70112817).

157753809 is a wasteful number, since it uses less digits than its factorization.

157753809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17528207 (or 17528204 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The square root of 157753809 is about 12560.0083200609. The cubic root of 157753809 is about 540.3310829743.

The spelling of 157753809 in words is "one hundred fifty-seven million, seven hundred fifty-three thousand, eight hundred nine".