54187251906 has 16 divisors (see below), whose sum is σ = 109859086944. Its totient is φ = 17814986784.

The previous prime is 54187251863. The next prime is 54187251917. The reversal of 54187251906 is 60915278145.

It is a happy number.

It is a Curzon 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, 61857156 + ... + 61858031.

It is an arithmetic number, because the mean of its divisors is an integer number (6866192934).

Almost surely, 2^54187251906 is an apocalyptic number.

54187251906 is an abundant number, since it is smaller than the sum of its proper divisors (55671835038).

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

54187251906 is a wasteful number, since it uses less digits than its factorization.

54187251906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123715265.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 54187251906 in words is "fifty-four billion, one hundred eighty-seven million, two hundred fifty-one thousand, nine hundred six".