51352623 has 60 divisors (see below), whose sum is σ = 91760592. Its totient is φ = 28019520.

The previous prime is 51352571. The next prime is 51352643. The reversal of 51352623 is 32625315.

51352623 is a `hidden beast` number, since 5 + 1 + 35 + 2 + 623 = 666.

It is not a de Polignac number, because 51352623 - 2⁹ = 51352111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51352643) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1092586 + ... + 1092632.

Almost surely, 2^51352623 is an apocalyptic number.

51352623 is a deficient number, since it is larger than the sum of its proper divisors (40407969).

51352623 is an equidigital number, since it uses as much as digits as its factorization.

51352623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 98 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 51352623 is about 7166.0744483992. The cubic root of 51352623 is about 371.6957058915.

Adding to 51352623 its reverse (32625315), we get a palindrome (83977938).

The spelling of 51352623 in words is "fifty-one million, three hundred fifty-two thousand, six hundred twenty-three".