54780751 has 4 divisors (see below), whose sum is σ = 56547904. Its totient is φ = 53013600.

The previous prime is 54780727. The next prime is 54780763. The reversal of 54780751 is 15708745.

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

It is a cyclic number.

It is not a de Polignac number, because 54780751 - 2¹³ = 54772559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54780751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54780701) 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, 883530 + ... + 883591.

It is an arithmetic number, because the mean of its divisors is an integer number (14136976).

Almost surely, 2^54780751 is an apocalyptic number.

54780751 is a deficient number, since it is larger than the sum of its proper divisors (1767153).

54780751 is a wasteful number, since it uses less digits than its factorization.

54780751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767152.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 54780751 is about 7401.4019617908. The cubic root of 54780751 is about 379.7892437041.

The spelling of 54780751 in words is "fifty-four million, seven hundred eighty thousand, seven hundred fifty-one".