525721461 has 16 divisors (see below), whose sum is σ = 716774400. Its totient is φ = 342593648.

The previous prime is 525721457. The next prime is 525721499. The reversal of 525721461 is 164127525.

It is a cyclic number.

It is not a de Polignac number, because 525721461 - 2² = 525721457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525721411) 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, 141850 + ... + 145508.

It is an arithmetic number, because the mean of its divisors is an integer number (44798400).

Almost surely, 2^525721461 is an apocalyptic number.

It is an amenable number.

525721461 is a deficient number, since it is larger than the sum of its proper divisors (191052939).

525721461 is a wasteful number, since it uses less digits than its factorization.

525721461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4728.

The product of its digits is 16800, while the sum is 33.

The square root of 525721461 is about 22928.6166394748. The cubic root of 525721461 is about 807.0836858838.

Adding to 525721461 its reverse (164127525), we get a palindrome (689848986).

The spelling of 525721461 in words is "five hundred twenty-five million, seven hundred twenty-one thousand, four hundred sixty-one".