40244551 has 2 divisors, whose sum is σ = 40244552. Its totient is φ = 40244550.

The previous prime is 40244521. The next prime is 40244557. The reversal of 40244551 is 15544204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40244551 - 2²¹ = 38147399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40244557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122275 + 20122276.

It is an arithmetic number, because the mean of its divisors is an integer number (20122276).

Almost surely, 2^40244551 is an apocalyptic number.

40244551 is a deficient number, since it is larger than the sum of its proper divisors (1).

40244551 is an equidigital number, since it uses as much as digits as its factorization.

40244551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 40244551 is about 6343.8593143291. The cubic root of 40244551 is about 342.6907343330.

Adding to 40244551 its reverse (15544204), we get a palindrome (55788755).

The spelling of 40244551 in words is "forty million, two hundred forty-four thousand, five hundred fifty-one".