157427775 has 36 divisors (see below), whose sum is σ = 284750128. Its totient is φ = 83134080.

The previous prime is 157427761. The next prime is 157427783. The reversal of 157427775 is 577724751.

157427775 is a `hidden beast` number, since 1 + 574 + 2 + 7 + 7 + 75 = 666.

It is not a de Polignac number, because 157427775 - 2⁴ = 157427759 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 157427775.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 19779 + ... + 26571.

Almost surely, 2^157427775 is an apocalyptic number.

157427775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

157427775 is a deficient number, since it is larger than the sum of its proper divisors (127322353).

157427775 is a wasteful number, since it uses less digits than its factorization.

157427775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912 (or 6904 counting only the distinct ones).

The product of its digits is 480200, while the sum is 45.

The square root of 157427775 is about 12547.0225551722. The cubic root of 157427775 is about 539.9585873591.

The spelling of 157427775 in words is "one hundred fifty-seven million, four hundred twenty-seven thousand, seven hundred seventy-five".