2154756106 has 4 divisors (see below), whose sum is σ = 3232134162. Its totient is φ = 1077378052.

The previous prime is 2154756089. The next prime is 2154756133. The reversal of 2154756106 is 6016574512.

It is a happy number.

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., 2139895081 + 14861025 = 46259^2 + 3855^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538689025 + ... + 538689028.

Almost surely, 2^2154756106 is an apocalyptic number.

2154756106 is a deficient number, since it is larger than the sum of its proper divisors (1077378056).

2154756106 is a wasteful number, since it uses less digits than its factorization.

2154756106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077378055.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 2154756106 is about 46419.3505555603. The cubic root of 2154756106 is about 1291.6138897580.

The spelling of 2154756106 in words is "two billion, one hundred fifty-four million, seven hundred fifty-six thousand, one hundred six".