78054037 has 4 divisors (see below), whose sum is σ = 79957836. Its totient is φ = 76150240.

The previous prime is 78054029. The next prime is 78054047. The reversal of 78054037 is 73045087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73045087 = 337 ⋅216751.

It can be written as a sum of positive squares in 2 ways, for example, as 45037521 + 33016516 = 6711^2 + 5746^2 .

It is a cyclic number.

It is not a de Polignac number, because 78054037 - 2³ = 78054029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78053993 and 78054011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78054007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 951838 + ... + 951919.

It is an arithmetic number, because the mean of its divisors is an integer number (19989459).

Almost surely, 2^78054037 is an apocalyptic number.

It is an amenable number.

78054037 is a deficient number, since it is larger than the sum of its proper divisors (1903799).

78054037 is a wasteful number, since it uses less digits than its factorization.

78054037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903798.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 78054037 is about 8834.8195793689. The cubic root of 78054037 is about 427.3645127684.

The spelling of 78054037 in words is "seventy-eight million, fifty-four thousand, thirty-seven".