40350551 has 2 divisors, whose sum is σ = 40350552. Its totient is φ = 40350550.

The previous prime is 40350529. The next prime is 40350577. The reversal of 40350551 is 15505304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40350551 - 2¹⁴ = 40334167 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40350521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20175275 + 20175276.

It is an arithmetic number, because the mean of its divisors is an integer number (20175276).

Almost surely, 2^40350551 is an apocalyptic number.

40350551 is a deficient number, since it is larger than the sum of its proper divisors (1).

40350551 is an equidigital number, since it uses as much as digits as its factorization.

40350551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 40350551 is about 6352.2083561546. The cubic root of 40350551 is about 342.9913412576.

Adding to 40350551 its reverse (15505304), we get a palindrome (55855855).

The spelling of 40350551 in words is "forty million, three hundred fifty thousand, five hundred fifty-one".