287425801 has 8 divisors (see below), whose sum is σ = 310136904. Its totient is φ = 264800640.

The previous prime is 287425799. The next prime is 287425819. The reversal of 287425801 is 108524782.

It can be written as a sum of positive squares in 4 ways, for example, as 60140025 + 227285776 = 7755^2 + 15076^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 287425801 - 2¹ = 287425799 is a prime.

It is a super-2 number, since 2×287425801² = 165227182160983202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287425301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14446 + ... + 27991.

It is an arithmetic number, because the mean of its divisors is an integer number (38767113).

Almost surely, 2^287425801 is an apocalyptic number.

It is an amenable number.

287425801 is a deficient number, since it is larger than the sum of its proper divisors (22711103).

287425801 is a wasteful number, since it uses less digits than its factorization.

287425801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42971.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 287425801 is about 16953.6368074818. The cubic root of 287425801 is about 659.9462773842.

It can be divided in two parts, 28742 and 5801, that added together give a palindrome (34543).

The spelling of 287425801 in words is "two hundred eighty-seven million, four hundred twenty-five thousand, eight hundred one".