2403240551 has 4 divisors (see below), whose sum is σ = 2403515352. Its totient is φ = 2402965752.

The previous prime is 2403240529. The next prime is 2403240557. The reversal of 2403240551 is 1550423042.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2403240551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2403240551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2403240557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123836 + ... + 141921.

It is an arithmetic number, because the mean of its divisors is an integer number (600878838).

Almost surely, 2^2403240551 is an apocalyptic number.

2403240551 is a deficient number, since it is larger than the sum of its proper divisors (274801).

2403240551 is an equidigital number, since it uses as much as digits as its factorization.

2403240551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274800.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2403240551 is about 49022.8574340582. The cubic root of 2403240551 is about 1339.4682212705.

Adding to 2403240551 its reverse (1550423042), we get a palindrome (3953663593).

The spelling of 2403240551 in words is "two billion, four hundred three million, two hundred forty thousand, five hundred fifty-one".