153032505421 has 8 divisors (see below), whose sum is σ = 154684683000. Its totient is φ = 151383014400.

The previous prime is 153032505403. The next prime is 153032505433. The reversal of 153032505421 is 124505230351.

It can be written as a sum of positive squares in 4 ways, for example, as 53400739396 + 99631766025 = 231086^2 + 315645^2 .

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 153032505421 - 2⁵ = 153032505389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153032505491) 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, 556996 + ... + 785053.

It is an arithmetic number, because the mean of its divisors is an integer number (19335585375).

Almost surely, 2^153032505421 is an apocalyptic number.

It is an amenable number.

153032505421 is a deficient number, since it is larger than the sum of its proper divisors (1652177579).

153032505421 is a wasteful number, since it uses less digits than its factorization.

153032505421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343279.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 153032505421 its reverse (124505230351), we get a palindrome (277537735772).

The spelling of 153032505421 in words is "one hundred fifty-three billion, thirty-two million, five hundred five thousand, four hundred twenty-one".