40506351 has 16 divisors (see below), whose sum is σ = 54722304. Its totient is φ = 26650304.

The previous prime is 40506343. The next prime is 40506373. The reversal of 40506351 is 15360504.

It is a cyclic number.

It is not a de Polignac number, because 40506351 - 2³ = 40506343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40506331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116560 + ... + 116906.

It is an arithmetic number, because the mean of its divisors is an integer number (3420144).

Almost surely, 2^40506351 is an apocalyptic number.

40506351 is a deficient number, since it is larger than the sum of its proper divisors (14215953).

40506351 is a wasteful number, since it uses less digits than its factorization.

40506351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 40506351 is about 6364.4599928038. The cubic root of 40506351 is about 343.4322226430.

Adding to 40506351 its reverse (15360504), we get a palindrome (55866855).

It can be divided in two parts, 4050 and 6351, that added together give a palindrome (10401).

The spelling of 40506351 in words is "forty million, five hundred six thousand, three hundred fifty-one".