51554534 has 4 divisors (see below), whose sum is σ = 77331804. Its totient is φ = 25777266.

The previous prime is 51554533. The next prime is 51554539. The reversal of 51554534 is 43545515.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51554534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51554533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12888632 + ... + 12888635.

It is an arithmetic number, because the mean of its divisors is an integer number (19332951).

Almost surely, 2^51554534 is an apocalyptic number.

51554534 is a deficient number, since it is larger than the sum of its proper divisors (25777270).

51554534 is a wasteful number, since it uses less digits than its factorization.

51554534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25777269.

The product of its digits is 30000, while the sum is 32.

The square root of 51554534 is about 7180.1486057045. The cubic root of 51554534 is about 372.1822198573.

The spelling of 51554534 in words is "fifty-one million, five hundred fifty-four thousand, five hundred thirty-four".