102091451 has 36 divisors (see below), whose sum is σ = 133001064. Its totient is φ = 78059520.

The previous prime is 102091447. The next prime is 102091453. The reversal of 102091451 is 154190201.

It is a happy number.

It is not a de Polignac number, because 102091451 - 2² = 102091447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102091453) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 397115 + ... + 397371.

It is an arithmetic number, because the mean of its divisors is an integer number (3694474).

Almost surely, 2^102091451 is an apocalyptic number.

102091451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102091451 is a deficient number, since it is larger than the sum of its proper divisors (30909613).

102091451 is a wasteful number, since it uses less digits than its factorization.

102091451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 102091451 is about 10104.0314231499. The cubic root of 102091451 is about 467.3724680965.

The spelling of 102091451 in words is "one hundred two million, ninety-one thousand, four hundred fifty-one".