157755973 has 4 divisors (see below), whose sum is σ = 157792320. Its totient is φ = 157719628.

The previous prime is 157755959. The next prime is 157755977. The reversal of 157755973 is 379557751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 379557751 = 53 ⋅7161467.

It is a cyclic number.

It is not a de Polignac number, because 157755973 - 2²¹ = 155658821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157755977) 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 3 ways as a sum of consecutive naturals, for example, 10615 + ... + 20692.

It is an arithmetic number, because the mean of its divisors is an integer number (39448080).

Almost surely, 2^157755973 is an apocalyptic number.

It is an amenable number.

157755973 is a deficient number, since it is larger than the sum of its proper divisors (36347).

157755973 is an equidigital number, since it uses as much as digits as its factorization.

157755973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36346.

The product of its digits is 1157625, while the sum is 49.

The square root of 157755973 is about 12560.0944662053. The cubic root of 157755973 is about 540.3335536407. Note that the first 3 decimals are identical.

The spelling of 157755973 in words is "one hundred fifty-seven million, seven hundred fifty-five thousand, nine hundred seventy-three".