52391137 has 2 divisors, whose sum is σ = 52391138.
Its totient is φ = 52391136.
The previous prime is 52391123. The next prime is 52391179. The reversal of 52391137 is 73119325.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 49688401 + 2702736 = 7049^2 + 1644^2
It is a cyclic number.
It is not a de Polignac number, because 52391137 - 211 = 52389089 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 52391099 and 52391108.
It is not a weakly prime, because it can be changed into another prime (52391107) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26195568 + 26195569.
It is an arithmetic number, because the mean of its divisors is an integer number (26195569).
Almost surely, 252391137 is an apocalyptic number.
It is an amenable number.
52391137 is a deficient number, since it is larger than the sum of its proper divisors (1).
52391137 is an equidigital number, since it uses as much as digits as its factorization.
52391137 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 5670, while the sum is 31.
The square root of 52391137 is about 7238.1722140330.
The cubic root of 52391137 is about 374.1846272123.
The spelling of 52391137 in words is "fifty-two million, three hundred ninety-one thousand, one hundred thirty-seven".