51523803 has 8 divisors (see below), whose sum is σ = 76331600. Its totient is φ = 34349184.

The previous prime is 51523783. The next prime is 51523853. The reversal of 51523803 is 30832515.

It is not a de Polignac number, because 51523803 - 2⁹ = 51523291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1908289 = 51523803 / (5 + 1 + 5 + 2 + 3 + 8 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51523853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954118 + ... + 954171.

It is an arithmetic number, because the mean of its divisors is an integer number (9541450).

Almost surely, 2^51523803 is an apocalyptic number.

51523803 is a deficient number, since it is larger than the sum of its proper divisors (24807797).

51523803 is a wasteful number, since it uses less digits than its factorization.

51523803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908298 (or 1908292 counting only the distinct ones).

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

The square root of 51523803 is about 7178.0082892123. The cubic root of 51523803 is about 372.1082541343.

It can be divided in two parts, 51523 and 803, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 51523803 in words is "fifty-one million, five hundred twenty-three thousand, eight hundred three".