151451021 has 16 divisors (see below), whose sum is σ = 165974400. Its totient is φ = 137742528.

The previous prime is 151451009. The next prime is 151451057. The reversal of 151451021 is 120154151.

151451021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151451021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151450984 and 151451002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151454021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42995 + ... + 46383.

It is an arithmetic number, because the mean of its divisors is an integer number (10373400).

Almost surely, 2^151451021 is an apocalyptic number.

It is an amenable number.

151451021 is a deficient number, since it is larger than the sum of its proper divisors (14523379).

151451021 is a wasteful number, since it uses less digits than its factorization.

151451021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 151451021 is about 12306.5438283866. The cubic root of 151451021 is about 533.0370562327.

The spelling of 151451021 in words is "one hundred fifty-one million, four hundred fifty-one thousand, twenty-one".