51452149 has 16 divisors (see below), whose sum is σ = 62494848. Its totient is φ = 41352192.

The previous prime is 51452143. The next prime is 51452201. The reversal of 51452149 is 94125415.

It is not a de Polignac number, because 51452149 - 2¹⁷ = 51321077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51452149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51452143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39462 + ... + 40744.

It is an arithmetic number, because the mean of its divisors is an integer number (3905928).

Almost surely, 2^51452149 is an apocalyptic number.

It is an amenable number.

51452149 is a deficient number, since it is larger than the sum of its proper divisors (11042699).

51452149 is a wasteful number, since it uses less digits than its factorization.

51452149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644.

The product of its digits is 7200, while the sum is 31.

The square root of 51452149 is about 7173.0153352687. The cubic root of 51452149 is about 371.9356774939.

The spelling of 51452149 in words is "fifty-one million, four hundred fifty-two thousand, one hundred forty-nine".