1411661521 has 8 divisors (see below), whose sum is σ = 1503653760. Its totient is φ = 1320664128.

The previous prime is 1411661509. The next prime is 1411661533. The reversal of 1411661521 is 1251661141.

It is an interprime number because it is at equal distance from previous prime (1411661509) and next prime (1411661533).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1411661521 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 1411661521.

It is not an unprimeable number, because it can be changed into a prime (1411664521) 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, 245781 + ... + 251458.

It is an arithmetic number, because the mean of its divisors is an integer number (187956720).

Almost surely, 2^1411661521 is an apocalyptic number.

It is an amenable number.

1411661521 is a deficient number, since it is larger than the sum of its proper divisors (91992239).

1411661521 is a wasteful number, since it uses less digits than its factorization.

1411661521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497423.

The product of its digits is 1440, while the sum is 28.

The square root of 1411661521 is about 37572.0843313224. The cubic root of 1411661521 is about 1121.7864562361.

The spelling of 1411661521 in words is "one billion, four hundred eleven million, six hundred sixty-one thousand, five hundred twenty-one".