1040087521 has 8 divisors (see below), whose sum is σ = 1136499264. Its totient is φ = 943985520.

The previous prime is 1040087513. The next prime is 1040087527. The reversal of 1040087521 is 1257800401.

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 1040087521 - 2³ = 1040087513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040087521.

It is not an unprimeable number, because it can be changed into a prime (1040087527) 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, 70381 + ... + 83866.

It is an arithmetic number, because the mean of its divisors is an integer number (142062408).

Almost surely, 2^1040087521 is an apocalyptic number.

1040087521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1040087521 is a deficient number, since it is larger than the sum of its proper divisors (96411743).

1040087521 is a wasteful number, since it uses less digits than its factorization.

1040087521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154871.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 1040087521 is about 32250.3879201476. The cubic root of 1040087521 is about 1013.1878237679.

Adding to 1040087521 its reverse (1257800401), we get a palindrome (2297887922).

The spelling of 1040087521 in words is "one billion, forty million, eighty-seven thousand, five hundred twenty-one".