981551052 has 36 divisors (see below), whose sum is σ = 2566702320. Its totient is φ = 315901152.

The previous prime is 981551033. The next prime is 981551057. The reversal of 981551052 is 250155189.

It is a happy number.

981551052 is a `hidden beast` number, since 98 + 1 + 5 + 510 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 981550998 and 981551016.

It is not an unprimeable number, because it can be changed into a prime (981551057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469048 + ... + 471135.

Almost surely, 2^981551052 is an apocalyptic number.

It is an amenable number.

981551052 is an abundant number, since it is smaller than the sum of its proper divisors (1585151268).

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

981551052 is a wasteful number, since it uses less digits than its factorization.

981551052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940222 (or 940217 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 36.

The square root of 981551052 is about 31329.7151598925. The cubic root of 981551052 is about 993.8121400326.

The spelling of 981551052 in words is "nine hundred eighty-one million, five hundred fifty-one thousand, fifty-two".