157655397 has 8 divisors (see below), whose sum is σ = 217455840. Its totient is φ = 101479280.

The previous prime is 157655383. The next prime is 157655417. The reversal of 157655397 is 793556751.

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 157655397 - 2¹⁹ = 157131109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157655327) 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 7 ways as a sum of consecutive naturals, for example, 905979 + ... + 906152.

It is an arithmetic number, because the mean of its divisors is an integer number (27181980).

Almost surely, 2^157655397 is an apocalyptic number.

It is an amenable number.

157655397 is a deficient number, since it is larger than the sum of its proper divisors (59800443).

157655397 is a wasteful number, since it uses less digits than its factorization.

157655397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812163.

The product of its digits is 992250, while the sum is 48.

The square root of 157655397 is about 12556.0900363131. The cubic root of 157655397 is about 540.2187008514.

The spelling of 157655397 in words is "one hundred fifty-seven million, six hundred fifty-five thousand, three hundred ninety-seven".