54397790 has 32 divisors (see below), whose sum is σ = 104055840. Its totient is φ = 20404224.

The previous prime is 54397781. The next prime is 54397793. The reversal of 54397790 is 9779345.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54397793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73241 + ... + 73979.

It is an arithmetic number, because the mean of its divisors is an integer number (3251745).

Almost surely, 2^54397790 is an apocalyptic number.

54397790 is a deficient number, since it is larger than the sum of its proper divisors (49658050).

54397790 is a wasteful number, since it uses less digits than its factorization.

54397790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 54397790 is about 7375.4857467153. The cubic root of 54397790 is about 378.9021637686.

The spelling of 54397790 in words is "fifty-four million, three hundred ninety-seven thousand, seven hundred ninety".