51267546 has 64 divisors (see below), whose sum is σ = 131621760. Its totient is φ = 14618880.

The previous prime is 51267493. The next prime is 51267547. The reversal of 51267546 is 64576215.

It is a happy number.

51267546 is a `hidden beast` number, since 51 + 2 + 67 + 546 = 666.

It is a super-2 number, since 2×51267546² = 5256722545724232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51267546.

It is not an unprimeable number, because it can be changed into a prime (51267547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7560 + ... + 12636.

It is an arithmetic number, because the mean of its divisors is an integer number (2056590).

Almost surely, 2^51267546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51267546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65810880).

51267546 is an abundant number, since it is smaller than the sum of its proper divisors (80354214).

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

51267546 is a wasteful number, since it uses less digits than its factorization.

51267546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5116 (or 5110 counting only the distinct ones).

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

The square root of 51267546 is about 7160.1358925652. The cubic root of 51267546 is about 371.4903269957.

The spelling of 51267546 in words is "fifty-one million, two hundred sixty-seven thousand, five hundred forty-six".