54971969 has 4 divisors (see below), whose sum is σ = 59200596. Its totient is φ = 50743344.

The previous prime is 54971957. The next prime is 54971981. The reversal of 54971969 is 96917945.

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

It is an interprime number because it is at equal distance from previous prime (54971957) and next prime (54971981).

It can be written as a sum of positive squares in 2 ways, for example, as 7182400 + 47789569 = 2680^2 + 6913^2 .

It is a cyclic number.

It is not a de Polignac number, because 54971969 - 2¹² = 54967873 is a prime.

It is a super-2 number, since 2×54971969² = 6043834751473922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54971929) 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, 2114294 + ... + 2114319.

It is an arithmetic number, because the mean of its divisors is an integer number (14800149).

Almost surely, 2^54971969 is an apocalyptic number.

It is an amenable number.

54971969 is a deficient number, since it is larger than the sum of its proper divisors (4228627).

54971969 is a wasteful number, since it uses less digits than its factorization.

54971969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4228626.

The product of its digits is 612360, while the sum is 50.

The square root of 54971969 is about 7414.3083966072. The cubic root of 54971969 is about 380.2306286971.

The spelling of 54971969 in words is "fifty-four million, nine hundred seventy-one thousand, nine hundred sixty-nine".