1253453520550 has 48 divisors (see below), whose sum is σ = 2906709887232. Its totient is φ = 390686810400.

The previous prime is 1253453520541. The next prime is 1253453520551. The reversal of 1253453520550 is 550253543521.

It is a super-2 number, since 2×1253453520550² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253453520551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162782322 + ... + 162790021.

It is an arithmetic number, because the mean of its divisors is an integer number (60556455984).

Almost surely, 2^{1253453520550} is an apocalyptic number.

1253453520550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1253453520550 is an abundant number, since it is smaller than the sum of its proper divisors (1653256366682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253453520550 is a wasteful number, since it uses less digits than its factorization.

1253453520550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325572373 (or 325572368 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 40.

The spelling of 1253453520550 in words is "one trillion, two hundred fifty-three billion, four hundred fifty-three million, five hundred twenty thousand, five hundred fifty".