53377657 has 4 divisors (see below), whose sum is σ = 53424036. Its totient is φ = 53331280.

The previous prime is 53377609. The next prime is 53377679. The reversal of 53377657 is 75677335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75677335 = 5 ⋅15135467.

It can be written as a sum of positive squares in 2 ways, for example, as 49617936 + 3759721 = 7044^2 + 1939^2 .

It is a cyclic number.

It is not a de Polignac number, because 53377657 - 2¹⁹ = 52853369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53377157) 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, 21418 + ... + 23779.

It is an arithmetic number, because the mean of its divisors is an integer number (13356009).

Almost surely, 2^53377657 is an apocalyptic number.

It is an amenable number.

53377657 is a deficient number, since it is larger than the sum of its proper divisors (46379).

53377657 is a wasteful number, since it uses less digits than its factorization.

53377657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46378.

The product of its digits is 463050, while the sum is 43.

The square root of 53377657 is about 7306.0014371748. The cubic root of 53377657 is about 376.5186580972.

The spelling of 53377657 in words is "fifty-three million, three hundred seventy-seven thousand, six hundred fifty-seven".