56155069 has 6 divisors (see below), whose sum is σ = 56566874. Its totient is φ = 55744560.

The previous prime is 56155039. The next prime is 56155103. The reversal of 56155069 is 96055165.

It can be written as a sum of positive squares in 3 ways, for example, as 9847044 + 46308025 = 3138^2 + 6805^2 .

It is not a de Polignac number, because 56155069 - 2¹³ = 56146877 is a prime.

It is a super-2 number, since 2×56155069² = 6306783548789522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56155019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100539 + ... + 101095.

Almost surely, 2^56155069 is an apocalyptic number.

It is an amenable number.

56155069 is a deficient number, since it is larger than the sum of its proper divisors (411805).

56155069 is an frugal number, since it uses more digits than its factorization.

56155069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 56155069 is about 7493.6685942201. The cubic root of 56155069 is about 382.9390495805.

The spelling of 56155069 in words is "fifty-six million, one hundred fifty-five thousand, sixty-nine".