51154562 has 4 divisors (see below), whose sum is σ = 76731846. Its totient is φ = 25577280.

The previous prime is 51154561. The next prime is 51154573. The reversal of 51154562 is 26545115.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26545115 = 5 ⋅5309023.

It can be written as a sum of positive squares in only one way, i.e., 47348161 + 3806401 = 6881^2 + 1951^2 .

It is not an unprimeable number, because it can be changed into a prime (51154561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12788639 + ... + 12788642.

Almost surely, 2^51154562 is an apocalyptic number.

51154562 is a deficient number, since it is larger than the sum of its proper divisors (25577284).

51154562 is a wasteful number, since it uses less digits than its factorization.

51154562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25577283.

The product of its digits is 6000, while the sum is 29.

The square root of 51154562 is about 7152.2417464736. The cubic root of 51154562 is about 371.2172280775.

Adding to 51154562 its reverse (26545115), we get a palindrome (77699677).

The spelling of 51154562 in words is "fifty-one million, one hundred fifty-four thousand, five hundred sixty-two".