102620553 has 36 divisors (see below), whose sum is σ = 162608688. Its totient is φ = 57395520.

The previous prime is 102620543. The next prime is 102620563. The reversal of 102620553 is 355026201.

It is an interprime number because it is at equal distance from previous prime (102620543) and next prime (102620563).

It is not a de Polignac number, because 102620553 - 2⁴ = 102620537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102620513) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 783298 + ... + 783428.

It is an arithmetic number, because the mean of its divisors is an integer number (4516908).

Almost surely, 2^102620553 is an apocalyptic number.

It is an amenable number.

102620553 is a deficient number, since it is larger than the sum of its proper divisors (59988135).

102620553 is an equidigital number, since it uses as much as digits as its factorization.

102620553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 102620553 is about 10130.1803044171. The cubic root of 102620553 is about 468.1784831315.

Adding to 102620553 its reverse (355026201), we get a palindrome (457646754).

The spelling of 102620553 in words is "one hundred two million, six hundred twenty thousand, five hundred fifty-three".