40354551 has 8 divisors (see below), whose sum is σ = 59784560. Its totient is φ = 26903016.

The previous prime is 40354541. The next prime is 40354553. The reversal of 40354551 is 15545304.

It is not a de Polignac number, because 40354551 - 2⁵ = 40354519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1494613 = 40354551 / (4 + 0 + 3 + 5 + 4 + 5 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40354553) 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, 747280 + ... + 747333.

It is an arithmetic number, because the mean of its divisors is an integer number (7473070).

Almost surely, 2^40354551 is an apocalyptic number.

40354551 is a deficient number, since it is larger than the sum of its proper divisors (19430009).

40354551 is a wasteful number, since it uses less digits than its factorization.

40354551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494622 (or 1494616 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 40354551 is about 6352.5231994854. The cubic root of 40354551 is about 343.0026746017.

Adding to 40354551 its reverse (15545304), we get a palindrome (55899855).

The spelling of 40354551 in words is "forty million, three hundred fifty-four thousand, five hundred fifty-one".