61657053 has 4 divisors (see below), whose sum is σ = 82209408. Its totient is φ = 41104700.

The previous prime is 61657019. The next prime is 61657081. The reversal of 61657053 is 35075616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61657053 - 2¹⁰ = 61656029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61657093) 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, 10276173 + ... + 10276178.

It is an arithmetic number, because the mean of its divisors is an integer number (20552352).

Almost surely, 2^61657053 is an apocalyptic number.

It is an amenable number.

61657053 is a deficient number, since it is larger than the sum of its proper divisors (20552355).

61657053 is a wasteful number, since it uses less digits than its factorization.

61657053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20552354.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 61657053 is about 7852.2005195996. The cubic root of 61657053 is about 395.0580548116.

The spelling of 61657053 in words is "sixty-one million, six hundred fifty-seven thousand, fifty-three".