102472155 has 16 divisors (see below), whose sum is σ = 182172960. Its totient is φ = 54651744.

The previous prime is 102472151. The next prime is 102472159. The reversal of 102472155 is 551274201.

It is an interprime number because it is at equal distance from previous prime (102472151) and next prime (102472159).

It is not a de Polignac number, because 102472155 - 2² = 102472151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (102472151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379392 + ... + 379661.

It is an arithmetic number, because the mean of its divisors is an integer number (11385810).

Almost surely, 2^102472155 is an apocalyptic number.

102472155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102472155 is a deficient number, since it is larger than the sum of its proper divisors (79700805).

102472155 is an equidigital number, since it uses as much as digits as its factorization.

102472155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759067 (or 759061 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 102472155 is about 10122.8531057207. The cubic root of 102472155 is about 467.9526990327.

The spelling of 102472155 in words is "one hundred two million, four hundred seventy-two thousand, one hundred fifty-five".