55072765 has 8 divisors (see below), whose sum is σ = 72095328. Its totient is φ = 40052880.

The previous prime is 55072763. The next prime is 55072781. The reversal of 55072765 is 56727055.

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

It is not a de Polignac number, because 55072765 - 2¹ = 55072763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55072763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500607 + ... + 500716.

It is an arithmetic number, because the mean of its divisors is an integer number (9011916).

Almost surely, 2^55072765 is an apocalyptic number.

55072765 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55072765 is a deficient number, since it is larger than the sum of its proper divisors (17022563).

55072765 is a wasteful number, since it uses less digits than its factorization.

55072765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001339.

The product of its (nonzero) digits is 73500, while the sum is 37.

The square root of 55072765 is about 7421.1026808689. The cubic root of 55072765 is about 380.4628823738.

The spelling of 55072765 in words is "fifty-five million, seventy-two thousand, seven hundred sixty-five".