981481575 has 96 divisors (see below), whose sum is σ = 1777386240. Its totient is φ = 476236800.

The previous prime is 981481561. The next prime is 981481601. The reversal of 981481575 is 575184189.

It is a happy number.

It is not a de Polignac number, because 981481575 - 2⁴ = 981481559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6251397 + ... + 6251553.

It is an arithmetic number, because the mean of its divisors is an integer number (18514440).

Almost surely, 2^981481575 is an apocalyptic number.

981481575 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

981481575 is a deficient number, since it is larger than the sum of its proper divisors (795904665).

981481575 is a wasteful number, since it uses less digits than its factorization.

981481575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 332 counting only the distinct ones).

The product of its digits is 403200, while the sum is 48.

The square root of 981481575 is about 31328.6063367013. The cubic root of 981481575 is about 993.7886911877.

The spelling of 981481575 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, five hundred seventy-five".