54280691 has 4 divisors (see below), whose sum is σ = 54807792. Its totient is φ = 53753592.

The previous prime is 54280687. The next prime is 54280693. The reversal of 54280691 is 19608245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19608245 = 5 ⋅3921649.

It is a cyclic number.

It is not a de Polignac number, because 54280691 - 2² = 54280687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54280693) 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, 263396 + ... + 263601.

It is an arithmetic number, because the mean of its divisors is an integer number (13701948).

Almost surely, 2^54280691 is an apocalyptic number.

54280691 is a deficient number, since it is larger than the sum of its proper divisors (527101).

54280691 is a wasteful number, since it uses less digits than its factorization.

54280691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527100.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 54280691 is about 7367.5430775802. The cubic root of 54280691 is about 378.6300881351.

The spelling of 54280691 in words is "fifty-four million, two hundred eighty thousand, six hundred ninety-one".