54261515 has 16 divisors (see below), whose sum is σ = 81181440. Its totient is φ = 33825120.

The previous prime is 54261497. The next prime is 54261527. The reversal of 54261515 is 51516245.

It is a happy number.

It is not a de Polignac number, because 54261515 - 2¹⁸ = 53999371 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70085 + ... + 70854.

It is an arithmetic number, because the mean of its divisors is an integer number (5073840).

Almost surely, 2^54261515 is an apocalyptic number.

54261515 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

54261515 is a deficient number, since it is larger than the sum of its proper divisors (26919925).

54261515 is a wasteful number, since it uses less digits than its factorization.

54261515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140962.

The product of its digits is 6000, while the sum is 29.

The square root of 54261515 is about 7366.2415789872. The cubic root of 54261515 is about 378.5854960614.

The spelling of 54261515 in words is "fifty-four million, two hundred sixty-one thousand, five hundred fifteen".