2553531421555 has 8 divisors (see below), whose sum is σ = 3197465432352. Its totient is φ = 1954006652928.

The previous prime is 2553531421537. The next prime is 2553531421583. The reversal of 2553531421555 is 5551241353552.

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

It is a cyclic number.

It is not a de Polignac number, because 2553531421555 - 2⁵ = 2553531421523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11102310414 + ... + 11102310643.

It is an arithmetic number, because the mean of its divisors is an integer number (399683179044).

Almost surely, 2^{2553531421555} is an apocalyptic number.

2553531421555 is a deficient number, since it is larger than the sum of its proper divisors (643934010797).

2553531421555 is a wasteful number, since it uses less digits than its factorization.

2553531421555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22204621085.

The product of its digits is 2250000, while the sum is 46.

The spelling of 2553531421555 in words is "two trillion, five hundred fifty-three billion, five hundred thirty-one million, four hundred twenty-one thousand, five hundred fifty-five".