153079821 has 8 divisors (see below), whose sum is σ = 226784960. Its totient is φ = 102053196.

The previous prime is 153079819. The next prime is 153079853. The reversal of 153079821 is 128970351.

It is not a de Polignac number, because 153079821 - 2¹ = 153079819 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153079921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2834785 + ... + 2834838.

It is an arithmetic number, because the mean of its divisors is an integer number (28348120).

Almost surely, 2^153079821 is an apocalyptic number.

It is an amenable number.

153079821 is a deficient number, since it is larger than the sum of its proper divisors (73705139).

153079821 is an equidigital number, since it uses as much as digits as its factorization.

153079821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5669632 (or 5669626 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 153079821 is about 12372.5430288199. The cubic root of 153079821 is about 534.9411190913.

The spelling of 153079821 in words is "one hundred fifty-three million, seventy-nine thousand, eight hundred twenty-one".