2621254403 has 2 divisors, whose sum is σ = 2621254404. Its totient is φ = 2621254402.

The previous prime is 2621254399. The next prime is 2621254439. The reversal of 2621254403 is 3044521262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2621254403 - 2² = 2621254399 is a prime.

It is not a weakly prime, because it can be changed into another prime (2621254453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310627201 + 1310627202.

It is an arithmetic number, because the mean of its divisors is an integer number (1310627202).

Almost surely, 2^2621254403 is an apocalyptic number.

2621254403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621254403 is an equidigital number, since it uses as much as digits as its factorization.

2621254403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 2621254403 is about 51198.1874972152. The cubic root of 2621254403 is about 1378.8056604378.

Adding to 2621254403 its reverse (3044521262), we get a palindrome (5665775665).

The spelling of 2621254403 in words is "two billion, six hundred twenty-one million, two hundred fifty-four thousand, four hundred three".