981148553 has 8 divisors (see below), whose sum is σ = 1223250240. Its totient is φ = 764531280.

The previous prime is 981148517. The next prime is 981148601. The reversal of 981148553 is 355841189.

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 981148553 - 2¹² = 981144457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981145553) 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, 6371018 + ... + 6371171.

It is an arithmetic number, because the mean of its divisors is an integer number (152906280).

Almost surely, 2^981148553 is an apocalyptic number.

It is an amenable number.

981148553 is a deficient number, since it is larger than the sum of its proper divisors (242101687).

981148553 is a wasteful number, since it uses less digits than its factorization.

981148553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12742207.

The product of its digits is 172800, while the sum is 44.

The square root of 981148553 is about 31323.2909030964. The cubic root of 981148553 is about 993.6762791824.

The spelling of 981148553 in words is "nine hundred eighty-one million, one hundred forty-eight thousand, five hundred fifty-three".