52400215 has 8 divisors (see below), whose sum is σ = 71863200. Its totient is φ = 35931552.

The previous prime is 52400213. The next prime is 52400219. The reversal of 52400215 is 51200425.

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 52400215 - 2¹ = 52400213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52400192 and 52400201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52400213) 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, 748540 + ... + 748609.

It is an arithmetic number, because the mean of its divisors is an integer number (8982900).

Almost surely, 2^52400215 is an apocalyptic number.

52400215 is a deficient number, since it is larger than the sum of its proper divisors (19462985).

52400215 is a wasteful number, since it uses less digits than its factorization.

52400215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497161.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 52400215 is about 7238.7992788860. The cubic root of 52400215 is about 374.2062380678.

The spelling of 52400215 in words is "fifty-two million, four hundred thousand, two hundred fifteen".