147511021 has 12 divisors (see below), whose sum is σ = 171793440. Its totient is φ = 126291480.

The previous prime is 147510997. The next prime is 147511069. The reversal of 147511021 is 120115741.

It is not a de Polignac number, because 147511021 - 2⁷ = 147510893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 147510983 and 147511001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147511321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75426 + ... + 77356.

It is an arithmetic number, because the mean of its divisors is an integer number (14316120).

Almost surely, 2^147511021 is an apocalyptic number.

It is an amenable number.

147511021 is a deficient number, since it is larger than the sum of its proper divisors (24282419).

147511021 is a wasteful number, since it uses less digits than its factorization.

147511021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3504 (or 3497 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 147511021 is about 12145.4115204056. The cubic root of 147511021 is about 528.3740617717.

Adding to 147511021 its reverse (120115741), we get a palindrome (267626762).

The spelling of 147511021 in words is "one hundred forty-seven million, five hundred eleven thousand, twenty-one".