1253445324551 has 8 divisors (see below), whose sum is σ = 1432516218240. Its totient is φ = 1074376249848.

The previous prime is 1253445324539. The next prime is 1253445324601. The reversal of 1253445324551 is 1554235443521.

It is a happy number.

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 1253445324551 - 2¹⁰ = 1253445323527 is a prime.

It is a super-2 number, since 2×1253445324551² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253445324511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1706960 + ... + 2328218.

It is an arithmetic number, because the mean of its divisors is an integer number (179064527280).

Almost surely, 2^{1253445324551} is an apocalyptic number.

1253445324551 is a deficient number, since it is larger than the sum of its proper divisors (179070893689).

1253445324551 is an equidigital number, since it uses as much as digits as its factorization.

1253445324551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909493.

The product of its digits is 1440000, while the sum is 44.

The spelling of 1253445324551 in words is "one trillion, two hundred fifty-three billion, four hundred forty-five million, three hundred twenty-four thousand, five hundred fifty-one".