120166557 has 32 divisors (see below), whose sum is σ = 194568192. Its totient is φ = 64399104.

The previous prime is 120166547. The next prime is 120166561. The reversal of 120166557 is 755661021.

It is not a de Polignac number, because 120166557 - 2⁶ = 120166493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120166547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164928 + ... + 165654.

It is an arithmetic number, because the mean of its divisors is an integer number (6080256).

Almost surely, 2^120166557 is an apocalyptic number.

120166557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

120166557 is a deficient number, since it is larger than the sum of its proper divisors (74401635).

120166557 is a wasteful number, since it uses less digits than its factorization.

120166557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 120166557 is about 10962.0507661660. The cubic root of 120166557 is about 493.4705120811.

The spelling of 120166557 in words is "one hundred twenty million, one hundred sixty-six thousand, five hundred fifty-seven".