102747055 has 4 divisors (see below), whose sum is σ = 123296472. Its totient is φ = 82197640.

The previous prime is 102747023. The next prime is 102747059. The reversal of 102747055 is 550747201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550747201 = 571 ⋅964531.

It is not a de Polignac number, because 102747055 - 2⁵ = 102747023 is a prime.

It is a super-2 number, since 2×102747055² = 21113914622346050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102747059) 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, 10274701 + ... + 10274710.

It is an arithmetic number, because the mean of its divisors is an integer number (30824118).

Almost surely, 2^102747055 is an apocalyptic number.

102747055 is a deficient number, since it is larger than the sum of its proper divisors (20549417).

102747055 is an equidigital number, since it uses as much as digits as its factorization.

102747055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20549416.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 102747055 is about 10136.4221991786. The cubic root of 102747055 is about 468.3707811761.

The spelling of 102747055 in words is "one hundred two million, seven hundred forty-seven thousand, fifty-five".