47121504 has 24 divisors (see below), whose sum is σ = 123694200. Its totient is φ = 15707136.

The previous prime is 47121499. The next prime is 47121511. The reversal of 47121504 is 40512174.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×47121504² = 4440872278444032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245329 + ... + 245520.

It is an arithmetic number, because the mean of its divisors is an integer number (5153925).

Almost surely, 2^47121504 is an apocalyptic number.

It is an amenable number.

47121504 is an abundant number, since it is smaller than the sum of its proper divisors (76572696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47121504 is a wasteful number, since it uses less digits than its factorization.

47121504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490862 (or 490854 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 47121504 is about 6864.5104705288. The cubic root of 47121504 is about 361.1933239630.

Adding to 47121504 its reverse (40512174), we get a palindrome (87633678).

It can be divided in two parts, 4712 and 1504, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 47121504 in words is "forty-seven million, one hundred twenty-one thousand, five hundred four".