525454513 has 4 divisors (see below), whose sum is σ = 556363620. Its totient is φ = 494545408.

The previous prime is 525454507. The next prime is 525454537. The reversal of 525454513 is 315454525.

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 354681889 + 170772624 = 18833^2 + 13068^2 .

It is a cyclic number.

It is not a de Polignac number, because 525454513 - 2⁹ = 525454001 is a prime.

It is a super-2 number, since 2×525454513² = 552204890464134338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525454543) 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, 15454528 + ... + 15454561.

It is an arithmetic number, because the mean of its divisors is an integer number (139090905).

Almost surely, 2^525454513 is an apocalyptic number.

It is an amenable number.

525454513 is a deficient number, since it is larger than the sum of its proper divisors (30909107).

525454513 is a wasteful number, since it uses less digits than its factorization.

525454513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30909106.

The product of its digits is 60000, while the sum is 34.

The square root of 525454513 is about 22922.7946158404. The cubic root of 525454513 is about 806.9470572261.

The spelling of 525454513 in words is "five hundred twenty-five million, four hundred fifty-four thousand, five hundred thirteen".