7381801 has 6 divisors (see below), whose sum is σ = 8587050. Its totient is φ = 6327216.

The previous prime is 7381789. The next prime is 7381819. The reversal of 7381801 is 1081837.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6528025 + 853776 = 2555^2 + 924^2 .

It is not a de Polignac number, because 7381801 - 2¹¹ = 7379753 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7381801.

It is not an unprimeable number, because it can be changed into a prime (7381831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75276 + ... + 75373.

It is an arithmetic number, because the mean of its divisors is an integer number (1431175).

Almost surely, 2^7381801 is an apocalyptic number.

It is an amenable number.

7381801 is a deficient number, since it is larger than the sum of its proper divisors (1205249).

7381801 is a wasteful number, since it uses less digits than its factorization.

7381801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150663 (or 150656 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 7381801 is about 2716.9469998511. The cubic root of 7381801 is about 194.7096357863.

The spelling of 7381801 in words is "seven million, three hundred eighty-one thousand, eight hundred one".