55621562 has 4 divisors (see below), whose sum is σ = 83432346. Its totient is φ = 27810780.

The previous prime is 55621561. The next prime is 55621627. The reversal of 55621562 is 26512655.

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

It can be written as a sum of positive squares in only one way, i.e., 34562641 + 21058921 = 5879^2 + 4589^2 .

It is not an unprimeable number, because it can be changed into a prime (55621561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13905389 + ... + 13905392.

Almost surely, 2^55621562 is an apocalyptic number.

55621562 is a deficient number, since it is larger than the sum of its proper divisors (27810784).

55621562 is a wasteful number, since it uses less digits than its factorization.

55621562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27810783.

The product of its digits is 18000, while the sum is 32.

The square root of 55621562 is about 7457.9864574830. The cubic root of 55621562 is about 381.7224714098.

The spelling of 55621562 in words is "fifty-five million, six hundred twenty-one thousand, five hundred sixty-two".