2154504434 has 4 divisors (see below), whose sum is σ = 3231756654. Its totient is φ = 1077252216.

The previous prime is 2154504421. The next prime is 2154504439. The reversal of 2154504434 is 4344054512.

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

It can be written as a sum of positive squares in only one way, i.e., 2088033025 + 66471409 = 45695^2 + 8153^2 .

It is a super-2 number, since 2×2154504434² = 9283778712251320712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2154504434.

It is not an unprimeable number, because it can be changed into a prime (2154504439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538626107 + ... + 538626110.

Almost surely, 2^2154504434 is an apocalyptic number.

2154504434 is a deficient number, since it is larger than the sum of its proper divisors (1077252220).

2154504434 is a wasteful number, since it uses less digits than its factorization.

2154504434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077252219.

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 2154504434 is about 46416.6396241693. The cubic root of 2154504434 is about 1291.5636016680.

Adding to 2154504434 its reverse (4344054512), we get a palindrome (6498558946).

The spelling of 2154504434 in words is "two billion, one hundred fifty-four million, five hundred four thousand, four hundred thirty-four".