1253520554 has 96 divisors (see below), whose sum is σ = 2385445440. Its totient is φ = 489265920.

The previous prime is 1253520553. The next prime is 1253520599. The reversal of 1253520554 is 4550253521.

It is a self number, because there is not a number n which added to its sum of digits gives 1253520554.

It is not an unprimeable number, because it can be changed into a prime (1253520553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4004702 + ... + 4005014.

It is an arithmetic number, because the mean of its divisors is an integer number (24848390).

Almost surely, 2^1253520554 is an apocalyptic number.

1253520554 is a deficient number, since it is larger than the sum of its proper divisors (1131924886).

1253520554 is a wasteful number, since it uses less digits than its factorization.

1253520554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 1253520554 is about 35405.0922043708. The cubic root of 1253520554 is about 1078.2277042244.

The spelling of 1253520554 in words is "one billion, two hundred fifty-three million, five hundred twenty thousand, five hundred fifty-four".