102093457 has 4 divisors (see below), whose sum is σ = 102367540. Its totient is φ = 101819376.

The previous prime is 102093451. The next prime is 102093463. The reversal of 102093457 is 754390201.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (102093451) and next prime (102093463).

It can be written as a sum of positive squares in 2 ways, for example, as 83740801 + 18352656 = 9151^2 + 4284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102093457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102093451) 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, 136482 + ... + 137227.

It is an arithmetic number, because the mean of its divisors is an integer number (25591885).

Almost surely, 2^102093457 is an apocalyptic number.

It is an amenable number.

102093457 is a deficient number, since it is larger than the sum of its proper divisors (274083).

102093457 is an equidigital number, since it uses as much as digits as its factorization.

102093457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274082.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 102093457 is about 10104.1306899703. The cubic root of 102093457 is about 467.3755292181.

The spelling of 102093457 in words is "one hundred two million, ninety-three thousand, four hundred fifty-seven".