151521505 has 16 divisors (see below), whose sum is σ = 185137344. Its totient is φ = 119021760.

The previous prime is 151521481. The next prime is 151521509. The reversal of 151521505 is 505125151.

It is not a de Polignac number, because 151521505 - 2¹⁵ = 151488737 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 151521505.

It is not an unprimeable number, because it can be changed into a prime (151521509) 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, 147895 + ... + 148915.

It is an arithmetic number, because the mean of its divisors is an integer number (11571084).

Almost surely, 2^151521505 is an apocalyptic number.

It is an amenable number.

151521505 is a deficient number, since it is larger than the sum of its proper divisors (33615839).

151521505 is a wasteful number, since it uses less digits than its factorization.

151521505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536.

The product of its (nonzero) digits is 1250, while the sum is 25.

The square root of 151521505 is about 12309.4071750024. The cubic root of 151521505 is about 533.1197336923.

Adding to 151521505 its reverse (505125151), we get a palindrome (656646656).

The spelling of 151521505 in words is "one hundred fifty-one million, five hundred twenty-one thousand, five hundred five".