61703553 has 4 divisors (see below), whose sum is σ = 82271408. Its totient is φ = 41135700.

The previous prime is 61703539. The next prime is 61703563. The reversal of 61703553 is 35530716.

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 not a de Polignac number, because 61703553 - 2²⁰ = 60654977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61703553.

It is not an unprimeable number, because it can be changed into a prime (61703533) 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, 10283923 + ... + 10283928.

It is an arithmetic number, because the mean of its divisors is an integer number (20567852).

Almost surely, 2^61703553 is an apocalyptic number.

It is an amenable number.

61703553 is a deficient number, since it is larger than the sum of its proper divisors (20567855).

61703553 is a wasteful number, since it uses less digits than its factorization.

61703553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20567854.

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 61703553 is about 7855.1609149654. The cubic root of 61703553 is about 395.1573437142.

The spelling of 61703553 in words is "sixty-one million, seven hundred three thousand, five hundred fifty-three".