102973555 has 4 divisors (see below), whose sum is σ = 123568272. Its totient is φ = 82378840.

The previous prime is 102973547. The next prime is 102973561. The reversal of 102973555 is 555379201.

It is a happy number.

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

It is not a de Polignac number, because 102973555 - 2³ = 102973547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10297351 + ... + 10297360.

It is an arithmetic number, because the mean of its divisors is an integer number (30892068).

Almost surely, 2^102973555 is an apocalyptic number.

102973555 is a deficient number, since it is larger than the sum of its proper divisors (20594717).

102973555 is an equidigital number, since it uses as much as digits as its factorization.

102973555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20594716.

The product of its (nonzero) digits is 47250, while the sum is 37.

The square root of 102973555 is about 10147.5886298174. The cubic root of 102973555 is about 468.7146941112.

The spelling of 102973555 in words is "one hundred two million, nine hundred seventy-three thousand, five hundred fifty-five".