151052521 has 4 divisors (see below), whose sum is σ = 151640532. Its totient is φ = 150464512.

The previous prime is 151052513. The next prime is 151052543. The reversal of 151052521 is 125250151.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85766121 + 65286400 = 9261^2 + 8080^2 .

It is a cyclic number.

It is not a de Polignac number, because 151052521 - 2³ = 151052513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151052492 and 151052501.

It is not an unprimeable number, because it can be changed into a prime (151052581) 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, 293620 + ... + 294133.

It is an arithmetic number, because the mean of its divisors is an integer number (37910133).

Almost surely, 2^151052521 is an apocalyptic number.

It is an amenable number.

151052521 is a deficient number, since it is larger than the sum of its proper divisors (588011).

151052521 is an equidigital number, since it uses as much as digits as its factorization.

151052521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588010.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 151052521 is about 12290.3425908312. The cubic root of 151052521 is about 532.5691341246.

The spelling of 151052521 in words is "one hundred fifty-one million, fifty-two thousand, five hundred twenty-one".