102155577 has 8 divisors (see below), whose sum is σ = 137110080. Its totient is φ = 67652400.

The previous prime is 102155561. The next prime is 102155579. The reversal of 102155577 is 775551201.

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

It is not a de Polignac number, because 102155577 - 2⁴ = 102155561 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (102155579) 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, 112302 + ... + 113207.

It is an arithmetic number, because the mean of its divisors is an integer number (17138760).

Almost surely, 2^102155577 is an apocalyptic number.

It is an amenable number.

102155577 is a deficient number, since it is larger than the sum of its proper divisors (34954503).

102155577 is a wasteful number, since it uses less digits than its factorization.

102155577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225663.

The product of its (nonzero) digits is 12250, while the sum is 33.

The square root of 102155577 is about 10107.2042128375. The cubic root of 102155577 is about 467.4703034317.

The spelling of 102155577 in words is "one hundred two million, one hundred fifty-five thousand, five hundred seventy-seven".