157255666 has 8 divisors (see below), whose sum is σ = 248298480. Its totient is φ = 74489508.

The previous prime is 157255663. The next prime is 157255667. The reversal of 157255666 is 666552751.

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

It is not an unprimeable number, because it can be changed into a prime (157255663) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2069116 + ... + 2069191.

It is an arithmetic number, because the mean of its divisors is an integer number (31037310).

Almost surely, 2^157255666 is an apocalyptic number.

157255666 is a deficient number, since it is larger than the sum of its proper divisors (91042814).

157255666 is a wasteful number, since it uses less digits than its factorization.

157255666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4138328.

The product of its digits is 378000, while the sum is 43.

The square root of 157255666 is about 12540.1621201642. The cubic root of 157255666 is about 539.7617444594.

The spelling of 157255666 in words is "one hundred fifty-seven million, two hundred fifty-five thousand, six hundred sixty-six".