52652778 has 8 divisors (see below), whose sum is σ = 105305568. Its totient is φ = 17550924.

The previous prime is 52652741. The next prime is 52652801. The reversal of 52652778 is 87725625.

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

52652778 is an admirable number.

It is a super-2 number, since 2×52652778² = 5544630062234568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4387726 + ... + 4387737.

It is an arithmetic number, because the mean of its divisors is an integer number (13163196).

Almost surely, 2^52652778 is an apocalyptic number.

52652778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52652778 is a wasteful number, since it uses less digits than its factorization.

52652778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8775468.

The product of its digits is 235200, while the sum is 42.

The square root of 52652778 is about 7256.2233978841. The cubic root of 52652778 is about 374.8064850446.

The spelling of 52652778 in words is "fifty-two million, six hundred fifty-two thousand, seven hundred seventy-eight".