61398453 has 8 divisors (see below), whose sum is σ = 83768608. Its totient is φ = 39980304.

The previous prime is 61398427. The next prime is 61398479. The reversal of 61398453 is 35489316.

It is an interprime number because it is at equal distance from previous prime (61398427) and next prime (61398479).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61398453 - 2¹⁰ = 61397429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61398053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237850 + ... + 238107.

It is an arithmetic number, because the mean of its divisors is an integer number (10471076).

Almost surely, 2^61398453 is an apocalyptic number.

It is an amenable number.

61398453 is a deficient number, since it is larger than the sum of its proper divisors (22370155).

61398453 is a wasteful number, since it uses less digits than its factorization.

61398453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476003.

The product of its digits is 77760, while the sum is 39.

The square root of 61398453 is about 7835.7164956371. The cubic root of 61398453 is about 394.5049676413.

The spelling of 61398453 in words is "sixty-one million, three hundred ninety-eight thousand, four hundred fifty-three".