45978137 has 8 divisors (see below), whose sum is σ = 48671040. Its totient is φ = 43359120.

The previous prime is 45978091. The next prime is 45978143. The reversal of 45978137 is 73187954.

45978137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 45978137 - 2⁸ = 45977881 is a prime.

It is a super-2 number, since 2×45978137² = 4227978163981538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45978167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17189 + ... + 19682.

It is an arithmetic number, because the mean of its divisors is an integer number (6083880).

Almost surely, 2^45978137 is an apocalyptic number.

It is an amenable number.

45978137 is a deficient number, since it is larger than the sum of its proper divisors (2692903).

45978137 is a wasteful number, since it uses less digits than its factorization.

45978137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36943.

The product of its digits is 211680, while the sum is 44.

The square root of 45978137 is about 6780.7180298255. The cubic root of 45978137 is about 358.2480127614.

The spelling of 45978137 in words is "forty-five million, nine hundred seventy-eight thousand, one hundred thirty-seven".