102632261 has 6 divisors (see below), whose sum is σ = 103668786. Its totient is φ = 101606000.

The previous prime is 102632251. The next prime is 102632273. The reversal of 102632261 is 162236201.

It can be written as a sum of positive squares in 3 ways, for example, as 74063236 + 28569025 = 8606^2 + 5345^2 .

It is not a de Polignac number, because 102632261 - 2⁶ = 102632197 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 (102632251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5171 + ... + 15231.

It is an arithmetic number, because the mean of its divisors is an integer number (17278131).

Almost surely, 2^102632261 is an apocalyptic number.

It is an amenable number.

102632261 is a deficient number, since it is larger than the sum of its proper divisors (1036525).

102632261 is an equidigital number, since it uses as much as digits as its factorization.

102632261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10263 (or 10162 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 102632261 is about 10130.7581651128. The cubic root of 102632261 is about 468.1962873142.

Adding to 102632261 its reverse (162236201), we get a palindrome (264868462).

The spelling of 102632261 in words is "one hundred two million, six hundred thirty-two thousand, two hundred sixty-one".