102550457 has 4 divisors (see below), whose sum is σ = 102642420. Its totient is φ = 102458496.

The previous prime is 102550439. The next prime is 102550489. The reversal of 102550457 is 754055201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 754055201 = 17117 ⋅44053.

It can be written as a sum of positive squares in 2 ways, for example, as 34916281 + 67634176 = 5909^2 + 8224^2 .

It is a cyclic number.

It is not a de Polignac number, because 102550457 - 2²⁴ = 85773241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102550417) 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, 44288 + ... + 46545.

It is an arithmetic number, because the mean of its divisors is an integer number (25660605).

Almost surely, 2^102550457 is an apocalyptic number.

It is an amenable number.

102550457 is a deficient number, since it is larger than the sum of its proper divisors (91963).

102550457 is an equidigital number, since it uses as much as digits as its factorization.

102550457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91962.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 102550457 is about 10126.7199526796. The cubic root of 102550457 is about 468.0718608454.

The spelling of 102550457 in words is "one hundred two million, five hundred fifty thousand, four hundred fifty-seven".