1461314521 has 4 divisors (see below), whose sum is σ = 1464995812. Its totient is φ = 1457633232.

The previous prime is 1461314489. The next prime is 1461314539. The reversal of 1461314521 is 1254131641.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 952586496 + 508728025 = 30864^2 + 22555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1461314521 - 2⁵ = 1461314489 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 1461314521.

It is not an unprimeable number, because it can be changed into a prime (1461311521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1840050 + ... + 1840843.

It is an arithmetic number, because the mean of its divisors is an integer number (366248953).

Almost surely, 2^1461314521 is an apocalyptic number.

It is an amenable number.

1461314521 is a deficient number, since it is larger than the sum of its proper divisors (3681291).

1461314521 is an equidigital number, since it uses as much as digits as its factorization.

1461314521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681290.

The product of its digits is 2880, while the sum is 28.

The square root of 1461314521 is about 38227.1437724557. The cubic root of 1461314521 is about 1134.7875610086.

The spelling of 1461314521 in words is "one billion, four hundred sixty-one million, three hundred fourteen thousand, five hundred twenty-one".