47521803 has 16 divisors (see below), whose sum is σ = 73094400. Its totient is φ = 26900256.

The previous prime is 47521781. The next prime is 47521819. The reversal of 47521803 is 30812574.

It is not a de Polignac number, because 47521803 - 2⁸ = 47521547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47521823) 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, 8328 + ... + 12821.

It is an arithmetic number, because the mean of its divisors is an integer number (4568400).

Almost surely, 2^47521803 is an apocalyptic number.

47521803 is a deficient number, since it is larger than the sum of its proper divisors (25572597).

47521803 is a wasteful number, since it uses less digits than its factorization.

47521803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21266.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 47521803 is about 6893.6059504442. The cubic root of 47521803 is about 362.2132251136.

It can be divided in two parts, 4752 and 1803, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 47521803 in words is "forty-seven million, five hundred twenty-one thousand, eight hundred three".