525345551 has 4 divisors (see below), whose sum is σ = 531248400. Its totient is φ = 519442704.

The previous prime is 525345539. The next prime is 525345559. The reversal of 525345551 is 155543525.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 525345551 - 2²⁶ = 458236687 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 (525345559) 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, 2951291 + ... + 2951468.

It is an arithmetic number, because the mean of its divisors is an integer number (132812100).

Almost surely, 2^525345551 is an apocalyptic number.

525345551 is a deficient number, since it is larger than the sum of its proper divisors (5902849).

525345551 is an equidigital number, since it uses as much as digits as its factorization.

525345551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5902848.

The product of its digits is 75000, while the sum is 35.

The square root of 525345551 is about 22920.4177754246. The cubic root of 525345551 is about 806.8912752687.

It can be divided in two parts, 52534 and 5551, that added together give a palindrome (58085).

The spelling of 525345551 in words is "five hundred twenty-five million, three hundred forty-five thousand, five hundred fifty-one".