157561606 has 8 divisors (see below), whose sum is σ = 242106984. Its totient is φ = 76859280.

The previous prime is 157561603. The next prime is 157561681. The reversal of 157561606 is 606165751.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157561603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960660 + ... + 960823.

It is an arithmetic number, because the mean of its divisors is an integer number (30263373).

Almost surely, 2^157561606 is an apocalyptic number.

157561606 is a deficient number, since it is larger than the sum of its proper divisors (84545378).

157561606 is a wasteful number, since it uses less digits than its factorization.

157561606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921526.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 157561606 is about 12552.3545998350. The cubic root of 157561606 is about 540.1115521714. Note that the first 3 decimals are identical.

The spelling of 157561606 in words is "one hundred fifty-seven million, five hundred sixty-one thousand, six hundred six".