56745145 has 8 divisors (see below), whose sum is σ = 68451840. Its totient is φ = 45157680.

The previous prime is 56745131. The next prime is 56745149. The reversal of 56745145 is 54154765.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56745145 - 2⁵ = 56745113 is a prime.

It is a super-2 number, since 2×56745145² = 6440022962142050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56745149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28755 + ... + 30664.

It is an arithmetic number, because the mean of its divisors is an integer number (8556480).

Almost surely, 2^56745145 is an apocalyptic number.

It is an amenable number.

56745145 is a deficient number, since it is larger than the sum of its proper divisors (11706695).

56745145 is a wasteful number, since it uses less digits than its factorization.

56745145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59615.

The product of its digits is 84000, while the sum is 37.

The square root of 56745145 is about 7532.9373420997. The cubic root of 56745145 is about 384.2756831996.

The spelling of 56745145 in words is "fifty-six million, seven hundred forty-five thousand, one hundred forty-five".