47250945 has 60 divisors (see below), whose sum is σ = 98571924. Its totient is φ = 21591360.

The previous prime is 47250911. The next prime is 47250949. The reversal of 47250945 is 54905274.

It can be written as a sum of positive squares in 2 ways, for example, as 5143824 + 42107121 = 2268^2 + 6489^2 .

It is not a de Polignac number, because 47250945 - 2⁶ = 47250881 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (47250949) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 18655 + ... + 21035.

Almost surely, 2^47250945 is an apocalyptic number.

47250945 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

47250945 is the 3969-th octagonal number.

It is an amenable number.

47250945 is an abundant number, since it is smaller than the sum of its proper divisors (51320979).

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

47250945 is a wasteful number, since it uses less digits than its factorization.

47250945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412 (or 2396 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 47250945 is about 6873.9322807255. The cubic root of 47250945 is about 361.5237497525.

The spelling of 47250945 in words is "forty-seven million, two hundred fifty thousand, nine hundred forty-five".