52780019 has 8 divisors (see below), whose sum is σ = 57395808. Its totient is φ = 48332160.

The previous prime is 52780001. The next prime is 52780037. The reversal of 52780019 is 91008725.

It is an interprime number because it is at equal distance from previous prime (52780001) and next prime (52780037).

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 52780019 - 2¹² = 52775923 is a prime.

It is a super-2 number, since 2×52780019² = 5571460811280722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52780069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41327 + ... + 42584.

It is an arithmetic number, because the mean of its divisors is an integer number (7174476).

Almost surely, 2^52780019 is an apocalyptic number.

52780019 is a deficient number, since it is larger than the sum of its proper divisors (4615789).

52780019 is a wasteful number, since it uses less digits than its factorization.

52780019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83965.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 52780019 is about 7264.9858224225. The cubic root of 52780019 is about 375.1081619848.

The spelling of 52780019 in words is "fifty-two million, seven hundred eighty thousand, nineteen".