55772741 has 4 divisors (see below), whose sum is σ = 55828812. Its totient is φ = 55716672.

The previous prime is 55772729. The next prime is 55772747. The reversal of 55772741 is 14727755.

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 2788900 + 52983841 = 1670^2 + 7279^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55772741 is a prime.

It is a super-2 number, since 2×55772741² = 6221197277306162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55772695 and 55772704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55772747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26516 + ... + 28541.

It is an arithmetic number, because the mean of its divisors is an integer number (13957203).

Almost surely, 2^55772741 is an apocalyptic number.

It is an amenable number.

55772741 is a deficient number, since it is larger than the sum of its proper divisors (56071).

55772741 is a wasteful number, since it uses less digits than its factorization.

55772741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56070.

The product of its digits is 68600, while the sum is 38.

The square root of 55772741 is about 7468.1149562657. The cubic root of 55772741 is about 382.0679981837.

The spelling of 55772741 in words is "fifty-five million, seven hundred seventy-two thousand, seven hundred forty-one".