61403455 has 8 divisors (see below), whose sum is σ = 74414304. Its totient is φ = 48636000.

The previous prime is 61403453. The next prime is 61403477. The reversal of 61403455 is 55430416.

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

It is not a de Polignac number, because 61403455 - 2¹ = 61403453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61403453) 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, 60291 + ... + 61300.

It is an arithmetic number, because the mean of its divisors is an integer number (9301788).

Almost surely, 2^61403455 is an apocalyptic number.

61403455 is a deficient number, since it is larger than the sum of its proper divisors (13010849).

61403455 is a wasteful number, since it uses less digits than its factorization.

61403455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121697.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 61403455 is about 7836.0356686273. The cubic root of 61403455 is about 394.5156805077.

The spelling of 61403455 in words is "sixty-one million, four hundred three thousand, four hundred fifty-five".