54151521774 has 16 divisors (see below), whose sum is σ = 123774907008. Its totient is φ = 15471863352.

The previous prime is 54151521709. The next prime is 54151521817. The reversal of 54151521774 is 47712515145.

It is a super-2 number, since 2×54151521774² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1289321947 = 54151521774 / (5 + 4 + 1 + 5 + 1 + 5 + 2 + 1 + 7 + 7 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644660932 + ... + 644661015.

It is an arithmetic number, because the mean of its divisors is an integer number (7735931688).

Almost surely, 2^54151521774 is an apocalyptic number.

54151521774 is an abundant number, since it is smaller than the sum of its proper divisors (69623385234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54151521774 is a wasteful number, since it uses less digits than its factorization.

54151521774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289321959.

The product of its digits is 196000, while the sum is 42.

The spelling of 54151521774 in words is "fifty-four billion, one hundred fifty-one million, five hundred twenty-one thousand, seven hundred seventy-four".