102530253 has 8 divisors (see below), whose sum is σ = 156236608. Its totient is φ = 58588704.

The previous prime is 102530243. The next prime is 102530257. The reversal of 102530253 is 352035201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102530253 - 2²⁵ = 68975821 is a prime.

It is a super-3 number, since 3×102530253³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 4882393 = 102530253 / (1 + 0 + 2 + 5 + 3 + 0 + 2 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102530257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2441176 + ... + 2441217.

It is an arithmetic number, because the mean of its divisors is an integer number (19529576).

Almost surely, 2^102530253 is an apocalyptic number.

It is an amenable number.

102530253 is a deficient number, since it is larger than the sum of its proper divisors (53706355).

102530253 is an equidigital number, since it uses as much as digits as its factorization.

102530253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4882403.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 102530253 is about 10125.7223446034. The cubic root of 102530253 is about 468.0411197342.

Adding to 102530253 its reverse (352035201), we get a palindrome (454565454).

The spelling of 102530253 in words is "one hundred two million, five hundred thirty thousand, two hundred fifty-three".