1521164041 has 4 divisors (see below), whose sum is σ = 1587301632. Its totient is φ = 1455026452.

The previous prime is 1521164027. The next prime is 1521164053. The reversal of 1521164041 is 1404611251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1404611251 = 41 ⋅34258811.

It is a cyclic number.

It is not a de Polignac number, because 1521164041 - 2⁹ = 1521163529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1521163997 and 1521164015.

It is not an unprimeable number, because it can be changed into a prime (1521164011) 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, 33068761 + ... + 33068806.

It is an arithmetic number, because the mean of its divisors is an integer number (396825408).

Almost surely, 2^1521164041 is an apocalyptic number.

It is an amenable number.

1521164041 is a deficient number, since it is larger than the sum of its proper divisors (66137591).

1521164041 is an equidigital number, since it uses as much as digits as its factorization.

1521164041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66137590.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1521164041 is about 39002.1030330417. The cubic root of 1521164041 is about 1150.0728475592.

Adding to 1521164041 its reverse (1404611251), we get a palindrome (2925775292).

The spelling of 1521164041 in words is "one billion, five hundred twenty-one million, one hundred sixty-four thousand, forty-one".