116021551 has 2 divisors, whose sum is σ = 116021552. Its totient is φ = 116021550.

The previous prime is 116021539. The next prime is 116021567. The reversal of 116021551 is 155120611.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116021551 is a prime.

It is a super-2 number, since 2×116021551² = 26922000592891202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116021501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58010775 + 58010776.

It is an arithmetic number, because the mean of its divisors is an integer number (58010776).

Almost surely, 2^116021551 is an apocalyptic number.

116021551 is a deficient number, since it is larger than the sum of its proper divisors (1).

116021551 is an equidigital number, since it uses as much as digits as its factorization.

116021551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 116021551 is about 10771.3300478632. The cubic root of 116021551 is about 487.7300965948.

The spelling of 116021551 in words is "one hundred sixteen million, twenty-one thousand, five hundred fifty-one".