51722150 has 12 divisors (see below), whose sum is σ = 96203292. Its totient is φ = 20688840.

The previous prime is 51722131. The next prime is 51722159. The reversal of 51722150 is 5122715.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51722159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 517172 + ... + 517271.

It is an arithmetic number, because the mean of its divisors is an integer number (8016941).

Almost surely, 2^51722150 is an apocalyptic number.

51722150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51722150 is a deficient number, since it is larger than the sum of its proper divisors (44481142).

51722150 is a wasteful number, since it uses less digits than its factorization.

51722150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034455 (or 1034450 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 51722150 is about 7191.8113156562. The cubic root of 51722150 is about 372.5851343631.

Adding to 51722150 its reverse (5122715), we get a palindrome (56844865).

The spelling of 51722150 in words is "fifty-one million, seven hundred twenty-two thousand, one hundred fifty".