53415645 has 16 divisors (see below), whose sum is σ = 85912512. Its totient is φ = 28339200.

The previous prime is 53415623. The next prime is 53415647. The reversal of 53415645 is 54651435.

It is not a de Polignac number, because 53415645 - 2⁹ = 53415133 is a prime.

It is a super-2 number, since 2×53415645² = 5706462261532050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53415647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6331 + ... + 12120.

It is an arithmetic number, because the mean of its divisors is an integer number (5369532).

Almost surely, 2^53415645 is an apocalyptic number.

It is an amenable number.

53415645 is a deficient number, since it is larger than the sum of its proper divisors (32496867).

53415645 is a wasteful number, since it uses less digits than its factorization.

53415645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18652.

The product of its digits is 36000, while the sum is 33.

The square root of 53415645 is about 7308.6007552746. The cubic root of 53415645 is about 376.6079576270.

The spelling of 53415645 in words is "fifty-three million, four hundred fifteen thousand, six hundred forty-five".