52251445 has 4 divisors (see below), whose sum is σ = 62701740. Its totient is φ = 41801152.

The previous prime is 52251401. The next prime is 52251449. The reversal of 52251445 is 54415225.

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 32970564 + 19280881 = 5742^2 + 4391^2 .

It is a cyclic number.

It is not a de Polignac number, because 52251445 - 2⁷ = 52251317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52251449) 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, 5225140 + ... + 5225149.

It is an arithmetic number, because the mean of its divisors is an integer number (15675435).

Almost surely, 2^52251445 is an apocalyptic number.

It is an amenable number.

52251445 is a deficient number, since it is larger than the sum of its proper divisors (10450295).

52251445 is a wasteful number, since it uses less digits than its factorization.

52251445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10450294.

The product of its digits is 8000, while the sum is 28.

The square root of 52251445 is about 7228.5160994495. The cubic root of 52251445 is about 373.8517647745.

It can be divided in two parts, 5225 and 1445, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 52251445 in words is "fifty-two million, two hundred fifty-one thousand, four hundred forty-five".