52621387 has 16 divisors (see below), whose sum is σ = 64997632. Its totient is φ = 41484960.

The previous prime is 52621381. The next prime is 52621417. The reversal of 52621387 is 78312625.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 52621387 - 2¹⁹ = 52097099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52621381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29248 + ... + 30994.

It is an arithmetic number, because the mean of its divisors is an integer number (4062352).

Almost surely, 2^52621387 is an apocalyptic number.

52621387 is a deficient number, since it is larger than the sum of its proper divisors (12376245).

52621387 is a wasteful number, since it uses less digits than its factorization.

52621387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098.

The product of its digits is 20160, while the sum is 34.

The square root of 52621387 is about 7254.0600355939. The cubic root of 52621387 is about 374.7319850862.

The spelling of 52621387 in words is "fifty-two million, six hundred twenty-one thousand, three hundred eighty-seven".