54778577 has 16 divisors (see below), whose sum is σ = 66211200. Its totient is φ = 44271360.

The previous prime is 54778553. The next prime is 54778601. The reversal of 54778577 is 77587745.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (54778553) and next prime (54778601).

It is not a de Polignac number, because 54778577 - 2⁶ = 54778513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54772577) 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, 31199 + ... + 32907.

It is an arithmetic number, because the mean of its divisors is an integer number (4138200).

Almost surely, 2^54778577 is an apocalyptic number.

It is an amenable number.

54778577 is a deficient number, since it is larger than the sum of its proper divisors (11432623).

54778577 is a wasteful number, since it uses less digits than its factorization.

54778577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976.

The product of its digits is 1920800, while the sum is 50.

The square root of 54778577 is about 7401.2550962658. The cubic root of 54778577 is about 379.7842195990.

It can be divided in two parts, 54778 and 577, that added together give a palindrome (55355).

The spelling of 54778577 in words is "fifty-four million, seven hundred seventy-eight thousand, five hundred seventy-seven".