55742437 has 4 divisors (see below), whose sum is σ = 57664620. Its totient is φ = 53820256.

The previous prime is 55742431. The next prime is 55742443. The reversal of 55742437 is 73424755.

It is a happy number.

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 (55742431) and next prime (55742443).

It can be written as a sum of positive squares in 2 ways, for example, as 37773316 + 17969121 = 6146^2 + 4239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55742437 is a prime.

It is a super-3 number, since 3×55742437³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55742396 and 55742405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55742431) 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, 961048 + ... + 961105.

It is an arithmetic number, because the mean of its divisors is an integer number (14416155).

Almost surely, 2^55742437 is an apocalyptic number.

It is an amenable number.

55742437 is a deficient number, since it is larger than the sum of its proper divisors (1922183).

55742437 is a wasteful number, since it uses less digits than its factorization.

55742437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922182.

The product of its digits is 117600, while the sum is 37.

The square root of 55742437 is about 7466.0857884168. The cubic root of 55742437 is about 381.9987870360.

The spelling of 55742437 in words is "fifty-five million, seven hundred forty-two thousand, four hundred thirty-seven".