61957243 has 4 divisors (see below), whose sum is σ = 61981920. Its totient is φ = 61932568.

The previous prime is 61957241. The next prime is 61957267. The reversal of 61957243 is 34275916.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61957243 - 2¹ = 61957241 is a prime.

It is a super-2 number, since 2×61957243² = 7677399920322098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61957241) 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, 8083 + ... + 13756.

It is an arithmetic number, because the mean of its divisors is an integer number (15495480).

Almost surely, 2^61957243 is an apocalyptic number.

61957243 is a deficient number, since it is larger than the sum of its proper divisors (24677).

61957243 is a wasteful number, since it uses less digits than its factorization.

61957243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24676.

The product of its digits is 45360, while the sum is 37.

The square root of 61957243 is about 7871.2923335371. The cubic root of 61957243 is about 395.6981574799.

The spelling of 61957243 in words is "sixty-one million, nine hundred fifty-seven thousand, two hundred forty-three".