51101340 has 24 divisors (see below), whose sum is σ = 143083920. Its totient is φ = 13627008.

The previous prime is 51101333. The next prime is 51101363. The reversal of 51101340 is 4310115.

It is a super-2 number, since 2×51101340² = 5222693899591200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent 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, 425785 + ... + 425904.

It is an arithmetic number, because the mean of its divisors is an integer number (5961830).

Almost surely, 2^51101340 is an apocalyptic number.

It is an amenable number.

51101340 is an abundant number, since it is smaller than the sum of its proper divisors (91982580).

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

51101340 is a wasteful number, since it uses less digits than its factorization.

51101340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851701 (or 851699 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 51101340 is about 7148.5201265717. The cubic root of 51101340 is about 371.0884433494.

Adding to 51101340 its reverse (4310115), we get a palindrome (55411455).

The spelling of 51101340 in words is "fifty-one million, one hundred one thousand, three hundred forty".