521312151 has 16 divisors (see below), whose sum is σ = 718834688. Its totient is φ = 335707200.

The previous prime is 521312093. The next prime is 521312159. The reversal of 521312151 is 151213125.

It is not a de Polignac number, because 521312151 - 2⁶ = 521312087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521312159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48195 + ... + 58011.

It is an arithmetic number, because the mean of its divisors is an integer number (44927168).

Almost surely, 2^521312151 is an apocalyptic number.

521312151 is a deficient number, since it is larger than the sum of its proper divisors (197522537).

521312151 is a wasteful number, since it uses less digits than its factorization.

521312151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10422.

The product of its digits is 300, while the sum is 21.

The square root of 521312151 is about 22832.2611889405. The cubic root of 521312151 is about 804.8209681207.

Adding to 521312151 its reverse (151213125), we get a palindrome (672525276).

The spelling of 521312151 in words is "five hundred twenty-one million, three hundred twelve thousand, one hundred fifty-one".