102155451 has 8 divisors (see below), whose sum is σ = 136289280. Its totient is φ = 68062632.

The previous prime is 102155423. The next prime is 102155461. The reversal of 102155451 is 154551201.

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

It is not a de Polignac number, because 102155451 - 2⁶ = 102155387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102155461) 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, 3871 + ... + 14808.

It is an arithmetic number, because the mean of its divisors is an integer number (17036160).

Almost surely, 2^102155451 is an apocalyptic number.

102155451 is a deficient number, since it is larger than the sum of its proper divisors (34133829).

102155451 is a wasteful number, since it uses less digits than its factorization.

102155451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20505.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 102155451 is about 10107.1979796579. The cubic root of 102155451 is about 467.4701112370.

The spelling of 102155451 in words is "one hundred two million, one hundred fifty-five thousand, four hundred fifty-one".