423550401521 has 8 divisors (see below), whose sum is σ = 456560314560. Its totient is φ = 390601790352.

The previous prime is 423550401499. The next prime is 423550401529. The reversal of 423550401521 is 125104055324.

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 423550401521 - 2⁶ = 423550401457 is a prime.

It is a super-2 number, since 2×423550401521² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423550401529) 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, 15311111 + ... + 15338748.

It is an arithmetic number, because the mean of its divisors is an integer number (57070039320).

Almost surely, 2^423550401521 is an apocalyptic number.

It is an amenable number.

423550401521 is a deficient number, since it is larger than the sum of its proper divisors (33009913039).

423550401521 is a wasteful number, since it uses less digits than its factorization.

423550401521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30650935.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 423550401521 its reverse (125104055324), we get a palindrome (548654456845).

The spelling of 423550401521 in words is "four hundred twenty-three billion, five hundred fifty million, four hundred one thousand, five hundred twenty-one".