47021572501 has 4 divisors (see below), whose sum is σ = 49787547372. Its totient is φ = 44255597632.

The previous prime is 47021572453. The next prime is 47021572553. The reversal of 47021572501 is 10527512074.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31532525476 + 15489047025 = 177574^2 + 124455^2 .

It is a cyclic number.

It is not a de Polignac number, because 47021572501 - 2⁷ = 47021572373 is a prime.

It is a super-2 number, since 2×47021572501² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47021576501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1382987410 + ... + 1382987443.

It is an arithmetic number, because the mean of its divisors is an integer number (12446886843).

Almost surely, 2^47021572501 is an apocalyptic number.

It is an amenable number.

47021572501 is a deficient number, since it is larger than the sum of its proper divisors (2765974871).

47021572501 is a wasteful number, since it uses less digits than its factorization.

47021572501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765974870.

The product of its (nonzero) digits is 19600, while the sum is 34.

The spelling of 47021572501 in words is "forty-seven billion, twenty-one million, five hundred seventy-two thousand, five hundred one".