102054455 has 4 divisors (see below), whose sum is σ = 122465352. Its totient is φ = 81643560.

The previous prime is 102054439. The next prime is 102054457. The reversal of 102054455 is 554450201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 554450201 = 17027 ⋅32563.

It is not a de Polignac number, because 102054455 - 2⁴ = 102054439 is a prime.

It is a super-2 number, since 2×102054455² = 20830223570694050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102054457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10205441 + ... + 10205450.

It is an arithmetic number, because the mean of its divisors is an integer number (30616338).

Almost surely, 2^102054455 is an apocalyptic number.

102054455 is a deficient number, since it is larger than the sum of its proper divisors (20410897).

102054455 is an equidigital number, since it uses as much as digits as its factorization.

102054455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20410896.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 102054455 is about 10102.2005028608. The cubic root of 102054455 is about 467.3160056448.

The spelling of 102054455 in words is "one hundred two million, fifty-four thousand, four hundred fifty-five".