61037551 has 2 divisors, whose sum is σ = 61037552. Its totient is φ = 61037550.

The previous prime is 61037549. The next prime is 61037567. The reversal of 61037551 is 15573016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61037551 - 2¹ = 61037549 is a prime.

Together with 61037549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61037521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30518775 + 30518776.

It is an arithmetic number, because the mean of its divisors is an integer number (30518776).

Almost surely, 2^61037551 is an apocalyptic number.

61037551 is a deficient number, since it is larger than the sum of its proper divisors (1).

61037551 is an equidigital number, since it uses as much as digits as its factorization.

61037551 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 61037551 is about 7812.6532624967. The cubic root of 61037551 is about 393.7304773725.

The spelling of 61037551 in words is "sixty-one million, thirty-seven thousand, five hundred fifty-one".