51523461 has 24 divisors (see below), whose sum is σ = 82573920. Its totient is φ = 30693600.

The previous prime is 51523403. The next prime is 51523463. The reversal of 51523461 is 16432515.

It is not a de Polignac number, because 51523461 - 2²¹ = 49426309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51523463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1431 + ... + 10251.

It is an arithmetic number, because the mean of its divisors is an integer number (3440580).

Almost surely, 2^51523461 is an apocalyptic number.

It is an amenable number.

51523461 is a deficient number, since it is larger than the sum of its proper divisors (31050459).

51523461 is a wasteful number, since it uses less digits than its factorization.

51523461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8897 (or 8894 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 51523461 is about 7177.9844664084. The cubic root of 51523461 is about 372.1074308171.

Adding to 51523461 its reverse (16432515), we get a palindrome (67955976).

It can be divided in two parts, 51523 and 461, that added together give a square (51984 = 228²).

The spelling of 51523461 in words is "fifty-one million, five hundred twenty-three thousand, four hundred sixty-one".