102190455 has 48 divisors (see below), whose sum is σ = 190494720. Its totient is φ = 50514624.

The previous prime is 102190447. The next prime is 102190463. The reversal of 102190455 is 554091201.

It is an interprime number because it is at equal distance from previous prime (102190447) and next prime (102190463).

It is not a de Polignac number, because 102190455 - 2³ = 102190447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38914 + ... + 41456.

It is an arithmetic number, because the mean of its divisors is an integer number (3968640).

Almost surely, 2^102190455 is an apocalyptic number.

102190455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102190455 is a deficient number, since it is larger than the sum of its proper divisors (88304265).

102190455 is a wasteful number, since it uses less digits than its factorization.

102190455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620 (or 2617 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 102190455 is about 10108.9294685441. The cubic root of 102190455 is about 467.5234986806.

The spelling of 102190455 in words is "one hundred two million, one hundred ninety thousand, four hundred fifty-five".