151560021 has 8 divisors (see below), whose sum is σ = 202681024. Its totient is φ = 100739520.

The previous prime is 151560001. The next prime is 151560037. The reversal of 151560021 is 120065151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 151560021 - 2⁶ = 151559957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151560021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151560001) 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, 73945 + ... + 75966.

It is an arithmetic number, because the mean of its divisors is an integer number (25335128).

Almost surely, 2^151560021 is an apocalyptic number.

It is an amenable number.

151560021 is a deficient number, since it is larger than the sum of its proper divisors (51121003).

151560021 is a wasteful number, since it uses less digits than its factorization.

151560021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150251.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 151560021 is about 12310.9715701077. The cubic root of 151560021 is about 533.1649019784.

The spelling of 151560021 in words is "one hundred fifty-one million, five hundred sixty thousand, twenty-one".