411721553 has 4 divisors (see below), whose sum is σ = 412796928. Its totient is φ = 410646180.

The previous prime is 411721523. The next prime is 411721559. The reversal of 411721553 is 355127114.

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.

It is a cyclic number.

It is not a de Polignac number, because 411721553 - 2¹⁶ = 411656017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (411721559) 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, 537113 + ... + 537878.

It is an arithmetic number, because the mean of its divisors is an integer number (103199232).

Almost surely, 2^411721553 is an apocalyptic number.

It is an amenable number.

411721553 is a deficient number, since it is larger than the sum of its proper divisors (1075375).

411721553 is a wasteful number, since it uses less digits than its factorization.

411721553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075374.

The product of its digits is 4200, while the sum is 29.

The square root of 411721553 is about 20290.9229213459. The cubic root of 411721553 is about 743.9342164685.

Adding to 411721553 its reverse (355127114), we get a palindrome (766848667).

The spelling of 411721553 in words is "four hundred eleven million, seven hundred twenty-one thousand, five hundred fifty-three".