53861407 has 2 divisors, whose sum is σ = 53861408. Its totient is φ = 53861406.

The previous prime is 53861351. The next prime is 53861411. The reversal of 53861407 is 70416835.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53861407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53861707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26930703 + 26930704.

It is an arithmetic number, because the mean of its divisors is an integer number (26930704).

Almost surely, 2^53861407 is an apocalyptic number.

53861407 is a deficient number, since it is larger than the sum of its proper divisors (1).

53861407 is an equidigital number, since it uses as much as digits as its factorization.

53861407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 53861407 is about 7339.0331107033. The cubic root of 53861407 is about 377.6526745281.

The spelling of 53861407 in words is "fifty-three million, eight hundred sixty-one thousand, four hundred seven".