61750531 has 2 divisors, whose sum is σ = 61750532. Its totient is φ = 61750530.

The previous prime is 61750529. The next prime is 61750547. The reversal of 61750531 is 13505716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61750531 - 2¹ = 61750529 is a prime.

It is a super-2 number, since 2×61750531² = 7626256157563922, which contains 22 as substring.

Together with 61750529, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61750531.

It is not a weakly prime, because it can be changed into another prime (61750501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30875265 + 30875266.

It is an arithmetic number, because the mean of its divisors is an integer number (30875266).

Almost surely, 2^61750531 is an apocalyptic number.

61750531 is a deficient number, since it is larger than the sum of its proper divisors (1).

61750531 is an equidigital number, since it uses as much as digits as its factorization.

61750531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 61750531 is about 7858.1506093991. The cubic root of 61750531 is about 395.2576026221.

The spelling of 61750531 in words is "sixty-one million, seven hundred fifty thousand, five hundred thirty-one".