61051389 has 32 divisors (see below), whose sum is σ = 99809280. Its totient is φ = 32415552.

The previous prime is 61051387. The next prime is 61051391. The reversal of 61051389 is 98315016.

It is an interprime number because it is at equal distance from previous prime (61051387) and next prime (61051391).

It is not a de Polignac number, because 61051389 - 2¹ = 61051387 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61051381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19704 + ... + 22590.

It is an arithmetic number, because the mean of its divisors is an integer number (3119040).

Almost surely, 2^61051389 is an apocalyptic number.

It is an amenable number.

61051389 is a deficient number, since it is larger than the sum of its proper divisors (38757891).

61051389 is a wasteful number, since it uses less digits than its factorization.

61051389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 61051389 is about 7813.5388269337. The cubic root of 61051389 is about 393.7602297166.

The spelling of 61051389 in words is "sixty-one million, fifty-one thousand, three hundred eighty-nine".