61942457 has 2 divisors, whose sum is σ = 61942458. Its totient is φ = 61942456.

The previous prime is 61942453. The next prime is 61942483. The reversal of 61942457 is 75424916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47623801 + 14318656 = 6901^2 + 3784^2 .

It is a cyclic number.

It is not a de Polignac number, because 61942457 - 2² = 61942453 is a prime.

It is a super-4 number, since 4×61942457⁴ (a number of 32 digits) contains 4444 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61942457.

It is not a weakly prime, because it can be changed into another prime (61942453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30971228 + 30971229.

It is an arithmetic number, because the mean of its divisors is an integer number (30971229).

Almost surely, 2^61942457 is an apocalyptic number.

It is an amenable number.

61942457 is a deficient number, since it is larger than the sum of its proper divisors (1).

61942457 is an equidigital number, since it uses as much as digits as its factorization.

61942457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 61942457 is about 7870.3530416367. The cubic root of 61942457 is about 395.6666773916. Note that the first 4 decimals are identical.

The spelling of 61942457 in words is "sixty-one million, nine hundred forty-two thousand, four hundred fifty-seven".