47001645 has 48 divisors (see below), whose sum is σ = 84644352. Its totient is φ = 24111360.

The previous prime is 47001631. The next prime is 47001653. The reversal of 47001645 is 54610074.

It is not a de Polignac number, because 47001645 - 2⁴ = 47001629 is a prime.

It is a super-3 number, since 3×47001645³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150009 + ... + 150321.

It is an arithmetic number, because the mean of its divisors is an integer number (1763424).

Almost surely, 2^47001645 is an apocalyptic number.

47001645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47001645 is a deficient number, since it is larger than the sum of its proper divisors (37642707).

47001645 is a wasteful number, since it uses less digits than its factorization.

47001645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 47001645 is about 6855.7745733068. The cubic root of 47001645 is about 360.8868182618.

The spelling of 47001645 in words is "forty-seven million, one thousand, six hundred forty-five".