102151491 has 16 divisors (see below), whose sum is σ = 147087360. Its totient is φ = 62687520.

The previous prime is 102151477. The next prime is 102151507. The reversal of 102151491 is 194151201.

It is a happy number.

It is not a de Polignac number, because 102151491 - 2¹⁴ = 102135107 is a prime.

It is a super-2 number, since 2×102151491² = 20869854227046162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102151411) 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 15 ways as a sum of consecutive naturals, for example, 11326 + ... + 18236.

It is an arithmetic number, because the mean of its divisors is an integer number (9192960).

Almost surely, 2^102151491 is an apocalyptic number.

102151491 is a deficient number, since it is larger than the sum of its proper divisors (44935869).

102151491 is a wasteful number, since it uses less digits than its factorization.

102151491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7306.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 102151491 is about 10107.0020777677. The cubic root of 102151491 is about 467.4640707515.

The spelling of 102151491 in words is "one hundred two million, one hundred fifty-one thousand, four hundred ninety-one".