40287051 has 40 divisors (see below), whose sum is σ = 70497504. Its totient is φ = 22446720.

The previous prime is 40287017. The next prime is 40287089. The reversal of 40287051 is 15078204.

It is not a de Polignac number, because 40287051 - 2¹⁰ = 40286027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40287151) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22381 + ... + 24113.

Almost surely, 2^40287051 is an apocalyptic number.

40287051 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

40287051 is a deficient number, since it is larger than the sum of its proper divisors (30210453).

40287051 is a wasteful number, since it uses less digits than its factorization.

40287051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793 (or 1784 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 40287051 is about 6347.2081264127. The cubic root of 40287051 is about 342.8113240110.

The spelling of 40287051 in words is "forty million, two hundred eighty-seven thousand, fifty-one".