47545000 has 80 divisors (see below), whose sum is σ = 114853860. Its totient is φ = 18432000.

The previous prime is 47544989. The next prime is 47545019. The reversal of 47545000 is 54574.

It can be written as a sum of positive squares in 10 ways, for example, as 3481956 + 44063044 = 1866^2 + 6638^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 184872 + ... + 185128.

Almost surely, 2^47545000 is an apocalyptic number.

47545000 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 47545000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57426930).

47545000 is an abundant number, since it is smaller than the sum of its proper divisors (67308860).

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

47545000 is a wasteful number, since it uses less digits than its factorization.

47545000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 47545000 is about 6895.2882463317. The cubic root of 47545000 is about 362.2721517037.

Adding to 47545000 its reverse (54574), we get a palindrome (47599574).

The spelling of 47545000 in words is "forty-seven million, five hundred forty-five thousand".