51152512154 has 4 divisors (see below), whose sum is σ = 76728768234. Its totient is φ = 25576256076.

The previous prime is 51152512111. The next prime is 51152512157. The reversal of 51152512154 is 45121525115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45121525115 = 5 ⋅9024305023.

It can be written as a sum of positive squares in only one way, i.e., 27998324929 + 23154187225 = 167327^2 + 152165^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51152512154.

It is not an unprimeable number, because it can be changed into a prime (51152512157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12788128037 + ... + 12788128040.

Almost surely, 2^51152512154 is an apocalyptic number.

51152512154 is a deficient number, since it is larger than the sum of its proper divisors (25576256080).

51152512154 is a wasteful number, since it uses less digits than its factorization.

51152512154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25576256079.

The product of its digits is 10000, while the sum is 32.

The spelling of 51152512154 in words is "fifty-one billion, one hundred fifty-two million, five hundred twelve thousand, one hundred fifty-four".