52666719 has 12 divisors (see below), whose sum is σ = 81687384. Its totient is φ = 30095184.

The previous prime is 52666717. The next prime is 52666741. The reversal of 52666719 is 91766625.

It is not a de Polignac number, because 52666719 - 2¹ = 52666717 is a prime.

It is a super-2 number, since 2×52666719² = 5547566580449922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52666717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178992 + ... + 179285.

It is an arithmetic number, because the mean of its divisors is an integer number (6807282).

Almost surely, 2^52666719 is an apocalyptic number.

52666719 is a deficient number, since it is larger than the sum of its proper divisors (29020665).

52666719 is a wasteful number, since it uses less digits than its factorization.

52666719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358294 (or 358287 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 52666719 is about 7257.1839579826. The cubic root of 52666719 is about 374.8395615907.

The spelling of 52666719 in words is "fifty-two million, six hundred sixty-six thousand, seven hundred nineteen".