40537641 has 8 divisors (see below), whose sum is σ = 55200384. Its totient is φ = 26450000.

The previous prime is 40537619. The next prime is 40537711. The reversal of 40537641 is 14673504.

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

It is a cyclic number.

It is not a de Polignac number, because 40537641 - 2⁶ = 40537577 is a prime.

It is a super-4 number, since 4×40537641⁴ (a number of 32 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40537599 and 40537608.

It is not an unprimeable number, because it can be changed into a prime (40537841) 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, 143610 + ... + 143891.

It is an arithmetic number, because the mean of its divisors is an integer number (6900048).

Almost surely, 2^40537641 is an apocalyptic number.

It is an amenable number.

40537641 is a deficient number, since it is larger than the sum of its proper divisors (14662743).

40537641 is a wasteful number, since it uses less digits than its factorization.

40537641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287551.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 40537641 is about 6366.9177001120. The cubic root of 40537641 is about 343.5206304126.

The spelling of 40537641 in words is "forty million, five hundred thirty-seven thousand, six hundred forty-one".