40197554 has 8 divisors (see below), whose sum is σ = 63843228. Its totient is φ = 18916480.

The previous prime is 40197541. The next prime is 40197557. The reversal of 40197554 is 45579104.

It can be written as a sum of positive squares in 2 ways, for example, as 32205625 + 7991929 = 5675^2 + 2827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40197557) 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, 591107 + ... + 591174.

Almost surely, 2^40197554 is an apocalyptic number.

40197554 is a deficient number, since it is larger than the sum of its proper divisors (23645674).

40197554 is a wasteful number, since it uses less digits than its factorization.

40197554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182300.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 40197554 is about 6340.1540990736. The cubic root of 40197554 is about 342.5572859584.

The spelling of 40197554 in words is "forty million, one hundred ninety-seven thousand, five hundred fifty-four".