52099387 has 4 divisors (see below), whose sum is σ = 54841480. Its totient is φ = 49357296.

The previous prime is 52099381. The next prime is 52099391. The reversal of 52099387 is 78399025.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52099387 - 2⁷ = 52099259 is a prime.

It is a super-2 number, since 2×52099387² = 5428692251551538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52099381) 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, 1371018 + ... + 1371055.

It is an arithmetic number, because the mean of its divisors is an integer number (13710370).

Almost surely, 2^52099387 is an apocalyptic number.

52099387 is a deficient number, since it is larger than the sum of its proper divisors (2742093).

52099387 is a wasteful number, since it uses less digits than its factorization.

52099387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742092.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 52099387 is about 7217.9905098303. The cubic root of 52099387 is about 373.4887611931.

The spelling of 52099387 in words is "fifty-two million, ninety-nine thousand, three hundred eighty-seven".