47551240 has 64 divisors (see below), whose sum is σ = 118532160. Its totient is φ = 17022720.

The previous prime is 47551237. The next prime is 47551247. The reversal of 47551240 is 4215574.

It is a super-2 number, since 2×47551240² = 4522240851075200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47551199 and 47551208.

It is not an unprimeable number, because it can be changed into a prime (47551247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28674 + ... + 30286.

It is an arithmetic number, because the mean of its divisors is an integer number (1852065).

Almost surely, 2^47551240 is an apocalyptic number.

47551240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47551240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59266080).

47551240 is an abundant number, since it is smaller than the sum of its proper divisors (70980920).

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

47551240 is a wasteful number, since it uses less digits than its factorization.

47551240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702 (or 1698 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 47551240 is about 6895.7407143830. The cubic root of 47551240 is about 362.2879997027.

It can be divided in two parts, 4755 and 1240, that added together give a palindrome (5995).

The spelling of 47551240 in words is "forty-seven million, five hundred fifty-one thousand, two hundred forty".