51924457 has 4 divisors (see below), whose sum is σ = 55918660. Its totient is φ = 47930256.

The previous prime is 51924437. The next prime is 51924479. The reversal of 51924457 is 75442915.

51924457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75442915 = 5 ⋅15088583.

It can be written as a sum of positive squares in 2 ways, for example, as 13682601 + 38241856 = 3699^2 + 6184^2 .

It is a cyclic number.

It is not a de Polignac number, because 51924457 - 2¹⁹ = 51400169 is a prime.

It is a super-2 number, since 2×51924457² = 5392298469489698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51924407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1997082 + ... + 1997107.

It is an arithmetic number, because the mean of its divisors is an integer number (13979665).

Almost surely, 2^51924457 is an apocalyptic number.

It is an amenable number.

51924457 is a deficient number, since it is larger than the sum of its proper divisors (3994203).

51924457 is a wasteful number, since it uses less digits than its factorization.

51924457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3994202.

The product of its digits is 50400, while the sum is 37.

The square root of 51924457 is about 7205.8626825662. The cubic root of 51924457 is about 373.0702812316.

It can be divided in two parts, 519 and 24457, that added together give a triangular number (24976 = T₂₂₃).

The spelling of 51924457 in words is "fifty-one million, nine hundred twenty-four thousand, four hundred fifty-seven".