56151943 has 4 divisors (see below), whose sum is σ = 57963328. Its totient is φ = 54340560.

The previous prime is 56151941. The next prime is 56151961. The reversal of 56151943 is 34915165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34915165 = 5 ⋅6983033.

It is a cyclic number.

It is not a de Polignac number, because 56151943 - 2¹ = 56151941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56151899 and 56151908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56151941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905646 + ... + 905707.

It is an arithmetic number, because the mean of its divisors is an integer number (14490832).

Almost surely, 2^56151943 is an apocalyptic number.

56151943 is a deficient number, since it is larger than the sum of its proper divisors (1811385).

56151943 is a wasteful number, since it uses less digits than its factorization.

56151943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811384.

The product of its digits is 16200, while the sum is 34.

The square root of 56151943 is about 7493.4600152400. The cubic root of 56151943 is about 382.9319437234.

The spelling of 56151943 in words is "fifty-six million, one hundred fifty-one thousand, nine hundred forty-three".