240002553 has 16 divisors (see below), whose sum is σ = 370350080. Its totient is φ = 135407376.

The previous prime is 240002519. The next prime is 240002569. The reversal of 240002553 is 355200042.

It is not a de Polignac number, because 240002553 - 2¹² = 239998457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240002513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70675 + ... + 73992.

It is an arithmetic number, because the mean of its divisors is an integer number (23146880).

Almost surely, 2^240002553 is an apocalyptic number.

It is an amenable number.

240002553 is a deficient number, since it is larger than the sum of its proper divisors (130347527).

240002553 is a wasteful number, since it uses less digits than its factorization.

240002553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144756.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 240002553 is about 15492.0157823312. The cubic root of 240002553 is about 621.4487047287.

Adding to 240002553 its reverse (355200042), we get a palindrome (595202595).

The spelling of 240002553 in words is "two hundred forty million, two thousand, five hundred fifty-three".