157775645 has 8 divisors (see below), whose sum is σ = 189441504. Its totient is φ = 126146704.

The previous prime is 157775633. The next prime is 157775671. The reversal of 157775645 is 546577751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157775645 - 2⁶ = 157775581 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157775645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1262 + ... + 17808.

It is an arithmetic number, because the mean of its divisors is an integer number (23680188).

Almost surely, 2^157775645 is an apocalyptic number.

It is an amenable number.

157775645 is a deficient number, since it is larger than the sum of its proper divisors (31665859).

157775645 is a wasteful number, since it uses less digits than its factorization.

157775645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18459.

The product of its digits is 1029000, while the sum is 47.

The square root of 157775645 is about 12560.8775569225. The cubic root of 157775645 is about 540.3560123780.

The spelling of 157775645 in words is "one hundred fifty-seven million, seven hundred seventy-five thousand, six hundred forty-five".