55707961 has 4 divisors (see below), whose sum is σ = 57505024. Its totient is φ = 53910900.

The previous prime is 55707959. The next prime is 55707991. The reversal of 55707961 is 16970755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55707961 - 2¹ = 55707959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55707901) 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, 898485 + ... + 898546.

It is an arithmetic number, because the mean of its divisors is an integer number (14376256).

Almost surely, 2^55707961 is an apocalyptic number.

It is an amenable number.

55707961 is a deficient number, since it is larger than the sum of its proper divisors (1797063).

55707961 is a wasteful number, since it uses less digits than its factorization.

55707961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797062.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 55707961 is about 7463.7765909759. The cubic root of 55707961 is about 381.9200169705.

It can be divided in two parts, 5570 and 7961, that added together give a palindrome (13531).

The spelling of 55707961 in words is "fifty-five million, seven hundred seven thousand, nine hundred sixty-one".