151636021 has 8 divisors (see below), whose sum is σ = 154838304. Its totient is φ = 148446480.

The previous prime is 151636019. The next prime is 151636031. The reversal of 151636021 is 120636151.

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 151636021 - 2¹ = 151636019 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 (151636031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23110 + ... + 28936.

It is an arithmetic number, because the mean of its divisors is an integer number (19354788).

Almost surely, 2^151636021 is an apocalyptic number.

It is an amenable number.

151636021 is a deficient number, since it is larger than the sum of its proper divisors (3202283).

151636021 is an equidigital number, since it uses as much as digits as its factorization.

151636021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6371.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 151636021 is about 12314.0578608353. The cubic root of 151636021 is about 533.2540058664.

The spelling of 151636021 in words is "one hundred fifty-one million, six hundred thirty-six thousand, twenty-one".