253412555551 has 4 divisors (see below), whose sum is σ = 254347657504. Its totient is φ = 252477453600.

The previous prime is 253412555491. The next prime is 253412555597. The reversal of 253412555551 is 155555214352.

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

It is a cyclic number.

It is not a de Polignac number, because 253412555551 - 2¹⁷ = 253412424479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253412555498 and 253412555507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253412550551) 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, 467550570 + ... + 467551111.

It is an arithmetic number, because the mean of its divisors is an integer number (63586914376).

Almost surely, 2^253412555551 is an apocalyptic number.

253412555551 is a deficient number, since it is larger than the sum of its proper divisors (935101953).

253412555551 is an equidigital number, since it uses as much as digits as its factorization.

253412555551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935101952.

The product of its digits is 750000, while the sum is 43.

The spelling of 253412555551 in words is "two hundred fifty-three billion, four hundred twelve million, five hundred fifty-five thousand, five hundred fifty-one".