54037781 has 16 divisors (see below), whose sum is σ = 65586816. Its totient is φ = 43462656.

The previous prime is 54037777. The next prime is 54037783. The reversal of 54037781 is 18773045.

It is a cyclic number.

It is not a de Polignac number, because 54037781 - 2² = 54037777 is a prime.

It is a super-2 number, since 2×54037781² = 5840163550807922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54037783) 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, 68270 + ... + 69056.

It is an arithmetic number, because the mean of its divisors is an integer number (4099176).

Almost surely, 2^54037781 is an apocalyptic number.

It is an amenable number.

54037781 is a deficient number, since it is larger than the sum of its proper divisors (11549035).

54037781 is a wasteful number, since it uses less digits than its factorization.

54037781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 54037781 is about 7351.0394503091. The cubic root of 54037781 is about 378.0644445614.

The spelling of 54037781 in words is "fifty-four million, thirty-seven thousand, seven hundred eighty-one".