54457297515 has 48 divisors (see below), whose sum is σ = 98084383488. Its totient is φ = 28985825376.

The previous prime is 54457297513. The next prime is 54457297519. The reversal of 54457297515 is 51579275445.

54457297515 is a `hidden beast` number, since 54 + 4 + 5 + 72 + 9 + 7 + 515 = 666.

It is not a de Polignac number, because 54457297515 - 2¹ = 54457297513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54457297513) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 566592 + ... + 655698.

It is an arithmetic number, because the mean of its divisors is an integer number (2043424656).

Almost surely, 2^54457297515 is an apocalyptic number.

54457297515 is a deficient number, since it is larger than the sum of its proper divisors (43627085973).

54457297515 is an equidigital number, since it uses as much as digits as its factorization.

54457297515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89630 (or 89618 counting only the distinct ones).

The product of its digits is 8820000, while the sum is 54.

The spelling of 54457297515 in words is "fifty-four billion, four hundred fifty-seven million, two hundred ninety-seven thousand, five hundred fifteen".