55572437 has 4 divisors (see below), whose sum is σ = 55730220. Its totient is φ = 55414656.

The previous prime is 55572373. The next prime is 55572443. The reversal of 55572437 is 73427555.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36554116 + 19018321 = 6046^2 + 4361^2 .

It is a cyclic number.

It is not a de Polignac number, because 55572437 - 2⁶ = 55572373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55572437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55572467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78362 + ... + 79067.

It is an arithmetic number, because the mean of its divisors is an integer number (13932555).

Almost surely, 2^55572437 is an apocalyptic number.

It is an amenable number.

55572437 is a deficient number, since it is larger than the sum of its proper divisors (157783).

55572437 is a wasteful number, since it uses less digits than its factorization.

55572437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157782.

The product of its digits is 147000, while the sum is 38.

The square root of 55572437 is about 7454.6922807048. The cubic root of 55572437 is about 381.6100591302.

The spelling of 55572437 in words is "fifty-five million, five hundred seventy-two thousand, four hundred thirty-seven".