102156451 has 8 divisors (see below), whose sum is σ = 108712800. Its totient is φ = 95660928.

The previous prime is 102156449. The next prime is 102156463. The reversal of 102156451 is 154651201.

It is a happy number.

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 102156451 - 2¹ = 102156449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102156751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11716 + ... + 18481.

It is an arithmetic number, because the mean of its divisors is an integer number (13589100).

Almost surely, 2^102156451 is an apocalyptic number.

102156451 is a deficient number, since it is larger than the sum of its proper divisors (6556349).

102156451 is a wasteful number, since it uses less digits than its factorization.

102156451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30413.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 102156451 is about 10107.2474492317. The cubic root of 102156451 is about 467.4716365874.

The spelling of 102156451 in words is "one hundred two million, one hundred fifty-six thousand, four hundred fifty-one".