507961445 has 8 divisors (see below), whose sum is σ = 645409944. Its totient is φ = 382465024.

The previous prime is 507961439. The next prime is 507961453. The reversal of 507961445 is 544169705.

It is a Cunningham number, because it is equal to 22538²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 11874916 + 496086529 = 3446^2 + 22273^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 507961445 - 2⁴ = 507961429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2987924 + ... + 2988093.

It is an arithmetic number, because the mean of its divisors is an integer number (80676243).

Almost surely, 2^507961445 is an apocalyptic number.

It is an amenable number.

507961445 is a deficient number, since it is larger than the sum of its proper divisors (137448499).

507961445 is a wasteful number, since it uses less digits than its factorization.

507961445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5976039.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 507961445 is about 22538.0000221848. Note that the first 4 decimals coincide. The cubic root of 507961445 is about 797.8910311359.

The spelling of 507961445 in words is "five hundred seven million, nine hundred sixty-one thousand, four hundred forty-five".