102473557 has 4 divisors (see below), whose sum is σ = 102493996. Its totient is φ = 102453120.

The previous prime is 102473537. The next prime is 102473561. The reversal of 102473557 is 755374201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50041476 + 52432081 = 7074^2 + 7241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102473557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102473537) 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, 3013 + ... + 14629.

It is an arithmetic number, because the mean of its divisors is an integer number (25623499).

Almost surely, 2^102473557 is an apocalyptic number.

It is an amenable number.

102473557 is a deficient number, since it is larger than the sum of its proper divisors (20439).

102473557 is an equidigital number, since it uses as much as digits as its factorization.

102473557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20438.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 102473557 is about 10122.9223547353. The cubic root of 102473557 is about 467.9548331627.

The spelling of 102473557 in words is "one hundred two million, four hundred seventy-three thousand, five hundred fifty-seven".