51672654 has 80 divisors (see below), whose sum is σ = 127961856. Its totient is φ = 15454800.

The previous prime is 51672641. The next prime is 51672659. The reversal of 51672654 is 45627615.

It is a happy number.

51672654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51672659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 190539 + ... + 190809.

Almost surely, 2^51672654 is an apocalyptic number.

51672654 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51672654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63980928).

51672654 is an abundant number, since it is smaller than the sum of its proper divisors (76289202).

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

51672654 is a wasteful number, since it uses less digits than its factorization.

51672654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 394 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 51672654 is about 7188.3693561196. The cubic root of 51672654 is about 372.4662468103.

It can be divided in two parts, 51672 and 654, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 51672654 in words is "fifty-one million, six hundred seventy-two thousand, six hundred fifty-four".