515225340 has 96 divisors (see below), whose sum is σ = 1831925760. Its totient is φ = 117764928.

The previous prime is 515225309. The next prime is 515225351. The reversal of 515225340 is 43522515.

It is a happy number.

515225340 is a `hidden beast` number, since 51 + 522 + 53 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64372 + ... + 71931.

It is an arithmetic number, because the mean of its divisors is an integer number (19082560).

Almost surely, 2^515225340 is an apocalyptic number.

It is an amenable number.

515225340 is an abundant number, since it is smaller than the sum of its proper divisors (1316700420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

515225340 is a wasteful number, since it uses less digits than its factorization.

515225340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136328 (or 136320 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 515225340 is about 22698.5757262433. The cubic root of 515225340 is about 801.6763494455.

Adding to 515225340 its reverse (43522515), we get a palindrome (558747855).

The spelling of 515225340 in words is "five hundred fifteen million, two hundred twenty-five thousand, three hundred forty".