40002501 has 32 divisors (see below), whose sum is σ = 66981888. Its totient is φ = 20629440.

The previous prime is 40002491. The next prime is 40002559. The reversal of 40002501 is 10520004.

It is not a de Polignac number, because 40002501 - 2⁶ = 40002437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40002301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35716 + ... + 36818.

It is an arithmetic number, because the mean of its divisors is an integer number (2093184).

Almost surely, 2^40002501 is an apocalyptic number.

It is an amenable number.

40002501 is a deficient number, since it is larger than the sum of its proper divisors (26979387).

40002501 is a wasteful number, since it uses less digits than its factorization.

40002501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 40002501 is about 6324.7530386569. The cubic root of 40002501 is about 342.0023169365.

Adding to 40002501 its reverse (10520004), we get a palindrome (50522505).

The spelling of 40002501 in words is "forty million, two thousand, five hundred one".