151053521 has 4 divisors (see below), whose sum is σ = 151078512. Its totient is φ = 151028532.

The previous prime is 151053491. The next prime is 151053523. The reversal of 151053521 is 125350151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 125350151 = 29 ⋅4322419.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151053521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151053523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2870 + ... + 17616.

It is an arithmetic number, because the mean of its divisors is an integer number (37769628).

Almost surely, 2^151053521 is an apocalyptic number.

It is an amenable number.

151053521 is a deficient number, since it is larger than the sum of its proper divisors (24991).

151053521 is a wasteful number, since it uses less digits than its factorization.

151053521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24990.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 151053521 is about 12290.3832731124. The cubic root of 151053521 is about 532.5703093626.

The spelling of 151053521 in words is "one hundred fifty-one million, fifty-three thousand, five hundred twenty-one".