51474000 has 160 divisors (see below), whose sum is σ = 173631744. Its totient is φ = 13094400.

The previous prime is 51473999. The next prime is 51474001. The reversal of 51474000 is 47415.

It is an interprime number because it is at equal distance from previous prime (51473999) and next prime (51474001).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51474001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137814 + ... + 138186.

Almost surely, 2^51474000 is an apocalyptic number.

51474000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51474000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86815872).

51474000 is an abundant number, since it is smaller than the sum of its proper divisors (122157744).

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

51474000 is a wasteful number, since it uses less digits than its factorization.

51474000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 51474000 is about 7174.5383126721. The cubic root of 51474000 is about 371.9883219828.

The spelling of 51474000 in words is "fifty-one million, four hundred seventy-four thousand".