40343554 has 4 divisors (see below), whose sum is σ = 60515334. Its totient is φ = 20171776.

The previous prime is 40343543. The next prime is 40343573. The reversal of 40343554 is 45534304.

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

It can be written as a sum of positive squares in only one way, i.e., 22896225 + 17447329 = 4785^2 + 4177^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10085887 + ... + 10085890.

Almost surely, 2^40343554 is an apocalyptic number.

40343554 is a deficient number, since it is larger than the sum of its proper divisors (20171780).

40343554 is a wasteful number, since it uses less digits than its factorization.

40343554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20171779.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 40343554 is about 6351.6575789317. The cubic root of 40343554 is about 342.9715146044.

Adding to 40343554 its reverse (45534304), we get a palindrome (85877858).

The spelling of 40343554 in words is "forty million, three hundred forty-three thousand, five hundred fifty-four".