40554251 has 4 divisors (see below), whose sum is σ = 40579512. Its totient is φ = 40528992.

The previous prime is 40554247. The next prime is 40554253. The reversal of 40554251 is 15245504.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40554251 - 2² = 40554247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40554251.

It is not an unprimeable number, because it can be changed into a prime (40554253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10046 + ... + 13491.

It is an arithmetic number, because the mean of its divisors is an integer number (10144878).

Almost surely, 2^40554251 is an apocalyptic number.

40554251 is a deficient number, since it is larger than the sum of its proper divisors (25261).

40554251 is a wasteful number, since it uses less digits than its factorization.

40554251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25260.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 40554251 is about 6368.2219653527. The cubic root of 40554251 is about 343.5675423558.

Adding to 40554251 its reverse (15245504), we get a palindrome (55799755).

The spelling of 40554251 in words is "forty million, five hundred fifty-four thousand, two hundred fifty-one".