47021315 has 16 divisors (see below), whose sum is σ = 64233216. Its totient is φ = 32709600.

The previous prime is 47021297. The next prime is 47021323. The reversal of 47021315 is 51312074.

It is not a de Polignac number, because 47021315 - 2¹⁰ = 47020291 is a prime.

It is a super-2 number, since 2×47021315² = 4422008128658450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17321 + ... + 19850.

It is an arithmetic number, because the mean of its divisors is an integer number (4014576).

Almost surely, 2^47021315 is an apocalyptic number.

47021315 is a deficient number, since it is larger than the sum of its proper divisors (17211901).

47021315 is a wasteful number, since it uses less digits than its factorization.

47021315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37210.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 47021315 is about 6857.2089803360. The cubic root of 47021315 is about 360.9371544695.

Adding to 47021315 its reverse (51312074), we get a palindrome (98333389).

The spelling of 47021315 in words is "forty-seven million, twenty-one thousand, three hundred fifteen".