54992138 has 8 divisors (see below), whose sum is σ = 84717732. Its totient is φ = 26752896.

The previous prime is 54992131. The next prime is 54992183. The reversal of 54992138 is 83129945.

It can be written as a sum of positive squares in 2 ways, for example, as 51595489 + 3396649 = 7183^2 + 1843^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×54992138² = 6048270483622088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54992095 and 54992104.

It is not an unprimeable number, because it can be changed into a prime (54992131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371495 + ... + 371642.

Almost surely, 2^54992138 is an apocalyptic number.

54992138 is a deficient number, since it is larger than the sum of its proper divisors (29725594).

54992138 is a wasteful number, since it uses less digits than its factorization.

54992138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743176.

The product of its digits is 77760, while the sum is 41.

The square root of 54992138 is about 7415.6684122202. The cubic root of 54992138 is about 380.2771247204.

The spelling of 54992138 in words is "fifty-four million, nine hundred ninety-two thousand, one hundred thirty-eight".