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53404997 is a prime number
BaseRepresentation
bin1100101110111…
…0010101000101
310201111020212212
43023232111011
5102132424442
65144353205
71215635462
oct313562505
9121436785
1053404997
1128166a68
1215a75805
13b0ab1b9
147142669
154a4da82
hex32ee545

53404997 has 2 divisors, whose sum is σ = 53404998. Its totient is φ = 53404996.

The previous prime is 53404969. The next prime is 53405003. The reversal of 53404997 is 79940435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38551681 + 14853316 = 6209^2 + 3854^2 .

It is a cyclic number.

It is not a de Polignac number, because 53404997 - 26 = 53404933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53404957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26702498 + 26702499.

It is an arithmetic number, because the mean of its divisors is an integer number (26702499).

Almost surely, 253404997 is an apocalyptic number.

It is an amenable number.

53404997 is a deficient number, since it is larger than the sum of its proper divisors (1).

53404997 is an equidigital number, since it uses as much as digits as its factorization.

53404997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 53404997 is about 7307.8722621567. The cubic root of 53404997 is about 376.5829313260.

The spelling of 53404997 in words is "fifty-three million, four hundred four thousand, nine hundred ninety-seven".