52245551 has 4 divisors (see below), whose sum is σ = 52644504. Its totient is φ = 51846600.

The previous prime is 52245541. The next prime is 52245569. The reversal of 52245551 is 15554225.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52245551 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 (52245541) 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, 199280 + ... + 199541.

It is an arithmetic number, because the mean of its divisors is an integer number (13161126).

Almost surely, 2^52245551 is an apocalyptic number.

52245551 is a deficient number, since it is larger than the sum of its proper divisors (398953).

52245551 is a wasteful number, since it uses less digits than its factorization.

52245551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398952.

The product of its digits is 10000, while the sum is 29.

The square root of 52245551 is about 7228.1083970843. The cubic root of 52245551 is about 373.8377073313.

Adding to 52245551 its reverse (15554225), we get a palindrome (67799776).

The spelling of 52245551 in words is "fifty-two million, two hundred forty-five thousand, five hundred fifty-one".