102245531 has 4 divisors (see below), whose sum is σ = 108259992. Its totient is φ = 96231072.

The previous prime is 102245527. The next prime is 102245537. The reversal of 102245531 is 135542201.

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

It is a cyclic number.

It is not a de Polignac number, because 102245531 - 2² = 102245527 is a prime.

It is a super-2 number, since 2×102245531² = 20908297218943922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102245497 and 102245506.

It is not an unprimeable number, because it can be changed into a prime (102245537) by changing a digit.

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, 3007205 + ... + 3007238.

It is an arithmetic number, because the mean of its divisors is an integer number (27064998).

Almost surely, 2^102245531 is an apocalyptic number.

102245531 is a deficient number, since it is larger than the sum of its proper divisors (6014461).

102245531 is an equidigital number, since it uses as much as digits as its factorization.

102245531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6014460.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 102245531 is about 10111.6532278357. The cubic root of 102245531 is about 467.6074748853.

Adding to 102245531 its reverse (135542201), we get a palindrome (237787732).

The spelling of 102245531 in words is "one hundred two million, two hundred forty-five thousand, five hundred thirty-one".