51061450 has 48 divisors (see below), whose sum is σ = 104296896. Its totient is φ = 18444800.

The previous prime is 51061429. The next prime is 51061457. The reversal of 51061450 is 5416015.

It is a super-2 number, since 2×51061450² = 5214543352205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (51061457) 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 23 ways as a sum of consecutive naturals, for example, 144474 + ... + 144826.

It is an arithmetic number, because the mean of its divisors is an integer number (2172852).

Almost surely, 2^51061450 is an apocalyptic number.

51061450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51061450 is an abundant number, since it is smaller than the sum of its proper divisors (53235446).

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

51061450 is a wasteful number, since it uses less digits than its factorization.

51061450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 51061450 is about 7145.7294939005. The cubic root of 51061450 is about 370.9918602893.

Adding to 51061450 its reverse (5416015), we get a palindrome (56477465).

It can be divided in two parts, 5106 and 1450, that added together give a palindrome (6556).

The spelling of 51061450 in words is "fifty-one million, sixty-one thousand, four hundred fifty".